Hello.
In order to see if the ratios are equal, we have to simplify both of them.
The first ratio is 8:4.
Divide 8 and 4 by 4:
2:1
Now, simplify the second ratio:
16:64
4:16
1:4
Are 2:1 and 1:4 equal? No.
Therefore, 8:4 and 16:64 are not equal ratios.
I hope this helps.
Have a nice day.
[tex]\boxed{imperturbability}[/tex]