Finding the Fourth Proportional to 31,986,542.79, 47,979,755.82 and 10,421,118.99
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Solution
The fourth proportional to 31,986,542.79, 47,979,755.82 and 10,421,118.99 is: 15,631,659.47
Step by Step Solution
- Step 1: Write the proportion equation
31,986,542.79 : 47,979,755.82 = 10,421,118.99 : x - Step 2: Convert to fraction form
31,986,542.79/47,979,755.82 = 10,421,118.99/x - Step 3: Cross multiply
31,986,542.79x = 47,979,755.82 × 10,421,118.99 - Step 4: Simplify right side
31,986,542.79x = 500,002,744,511,365.06 - Step 5: Solve for x
x = 500,002,744,511,365.06/31,986,542.79 - Step 6: Final answer
x = 15,631,659.47
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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.