Precise sampling rate and decimation

What you want to do is possible but I don't know the details of how to implement it. I've used audio sample rate converter ICs like this in the past:

http://www.analog.com/en/products/audio-video/sample-rate-converters/ad1893.html#product-overview

The chip figures out the input to output sample rate ratio from the input and output sample rate clocks and it does this continuously on the fly. This particular chip is limited to input : output sample rate ratios between 1:2 and 2:1. This would be a fun project to figure out. Good luck with it.