The recursive formula is 
Explanation:
The sequence is 
Since, it is given that it is a geometric sequence, let us find the common ratio of the sequence.
Thus, we have,

Also,

And,

Hence, dividing each term of the sequence, the common ratio is 
Now, we shall determine the recursive formula for this geometric sequence.
The formula to find the recursive formula for the geometric sequence is given by

Substituting the value of r, we get,

Therefore, the recursive formula is 