Finding the Fourth Proportional to 42,487,221.20, 63,730,831.80 and 13,753,977.80
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Solution
The fourth proportional to 42,487,221.20, 63,730,831.80 and 13,753,977.80 is: 20,630,966.70
Step by Step Solution
- Step 1: Write the proportion equation
42,487,221.20 : 63,730,831.80 = 13,753,977.80 : x - Step 2: Convert to fraction form
42,487,221.20/63,730,831.80 = 13,753,977.80/x - Step 3: Cross multiply
42,487,221.20x = 63,730,831.80 × 13,753,977.80 - Step 4: Simplify right side
42,487,221.20x = 876,552,445,752,734 - Step 5: Solve for x
x = 876,552,445,752,734/42,487,221.20 - Step 6: Final answer
x = 20,630,966.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.