Finding the Fourth Proportional to 70.25, 105.30 and 50.00

Step by Step Solution

1. Step 1: Write the proportion equation
   70.25 : 105.30 = 50.00 : x
2. Step 2: Convert to fraction form
   70.25/105.30 = 50.00/x
3. Step 3: Cross multiply
   70.25x = 105.30 × 50.00
4. Step 4: Simplify right side
   70.25x = 5,264.47
5. Step 5: Solve for x
   x = 5,264.47/70.25
6. Step 6: Final answer
   x = 74.94