Finding the Fourth Proportional to 83,121,415.20, 124,684,261.20 and 39,391,912.80
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Solution
The fourth proportional to 83,121,415.20, 124,684,261.20 and 39,391,912.80 is: 59,088,882.61
Step by Step Solution
- Step 1: Write the proportion equation
83,121,415.20 : 124,684,261.20 = 39,391,912.80 : x - Step 2: Convert to fraction form
83,121,415.20/124,684,261.20 = 39,391,912.80/x - Step 3: Cross multiply
83,121,415.20x = 124,684,261.20 × 39,391,912.80 - Step 4: Simplify right side
83,121,415.20x = 4,911,551,544,722,823 - Step 5: Solve for x
x = 4,911,551,544,722,823/83,121,415.20 - Step 6: Final answer
x = 59,088,882.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.