Finding the Fourth Proportional to 20,709,818.24, 31,062,627.84 and 5,561,781.44
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Solution
The fourth proportional to 20,709,818.24, 31,062,627.84 and 5,561,781.44 is: 8,342,108.32
Step by Step Solution
- Step 1: Write the proportion equation
20,709,818.24 : 31,062,627.84 = 5,561,781.44 : x - Step 2: Convert to fraction form
20,709,818.24/31,062,627.84 = 5,561,781.44/x - Step 3: Cross multiply
20,709,818.24x = 31,062,627.84 × 5,561,781.44 - Step 4: Simplify right side
20,709,818.24x = 172,763,546,998,139.31 - Step 5: Solve for x
x = 172,763,546,998,139.31/20,709,818.24 - Step 6: Final answer
x = 8,342,108.32
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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.