Answer
The ratio of this orbital speed to the Earth's present orbital speed is $~~0.00406$
Work Step by Step
In part (a), we found that the orbital speed would be $v = 121~m/s$
We can find the ratio of this orbital speed to the Earth's present orbital speed:
$\frac{121~m/s}{29,800~m/s} = 0.00406$
The ratio of this orbital speed to the Earth's present orbital speed is $~~0.00406$