The main purpose of this study is to fit some mathematical models to age specific participation rates (ASPRs) for male, female and both sexes population in Bangladesh and their forward cumulative distribution. For this, the data is taken from Statistical Year Book of Bangladesh of 2011. Quasi Newton Method is employed to fit these mathematical models using the software STATISTICA. Moreover, t-test, Ftest and cross validity prediction power (CVPP) are used to check the accuracy as well as validation of the model. In this study, it is found that ASPRs for male, female and both sexes population follow third degree polynomial model and their forward cumulative distribution follow cubic polynomial model. These models are well fitted in accordance with t-test, F-test and cross validity prediction power. The stability of these models are more than 95%, 84%, 96%, 99%, 99%, and 99% respectively.