Finding the Fourth Proportional to 42,486,721.34, 63,488,217.05 and 31,901,387.41
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Solution
The fourth proportional to 42,486,721.34, 63,488,217.05 and 31,901,387.41 is: 47,670,475.48
Step by Step Solution
- Step 1: Write the proportion equation
42,486,721.34 : 63,488,217.05 = 31,901,387.41 : x - Step 2: Convert to fraction form
42,486,721.34/63,488,217.05 = 31,901,387.41/x - Step 3: Cross multiply
42,486,721.34x = 63,488,217.05 × 31,901,387.41 - Step 4: Simplify right side
42,486,721.34x = 2,025,362,207,764,776.25 - Step 5: Solve for x
x = 2,025,362,207,764,776.25/42,486,721.34 - Step 6: Final answer
x = 47,670,475.48
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.