Finding the Fourth Proportional to 31,506,969.80, 47,260,454.70 and 12,331,353.80
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Solution
The fourth proportional to 31,506,969.80, 47,260,454.70 and 12,331,353.80 is: 18,497,030.70
Step by Step Solution
- Step 1: Write the proportion equation
31,506,969.80 : 47,260,454.70 = 12,331,353.80 : x - Step 2: Convert to fraction form
31,506,969.80/47,260,454.70 = 12,331,353.80/x - Step 3: Cross multiply
31,506,969.80x = 47,260,454.70 × 12,331,353.80 - Step 4: Simplify right side
31,506,969.80x = 582,785,387,654,572.88 - Step 5: Solve for x
x = 582,785,387,654,572.88/31,506,969.80 - Step 6: Final answer
x = 18,497,030.70
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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.