Finding the Fourth Proportional to 71,164,963.20, 106,747,444.80 and 65,622,230.40
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Solution
The fourth proportional to 71,164,963.20, 106,747,444.80 and 65,622,230.40 is: 98,433,345.60
Step by Step Solution
- Step 1: Write the proportion equation
71,164,963.20 : 106,747,444.80 = 65,622,230.40 : x - Step 2: Convert to fraction form
71,164,963.20/106,747,444.80 = 65,622,230.40/x - Step 3: Cross multiply
71,164,963.20x = 106,747,444.80 × 65,622,230.40 - Step 4: Simplify right side
71,164,963.20x = 7,005,005,417,276,882 - Step 5: Solve for x
x = 7,005,005,417,276,882/71,164,963.20 - Step 6: Final answer
x = 98,433,345.60
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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.