Finding the Fourth Proportional to 31,527,478.08, 43,508,402.64 and 18,471,612.96
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Solution
The fourth proportional to 31,527,478.08, 43,508,402.64 and 18,471,612.96 is: 25,491,108.80
Step by Step Solution
- Step 1: Write the proportion equation
31,527,478.08 : 43,508,402.64 = 18,471,612.96 : x - Step 2: Convert to fraction form
31,527,478.08/43,508,402.64 = 18,471,612.96/x - Step 3: Cross multiply
31,527,478.08x = 43,508,402.64 × 18,471,612.96 - Step 4: Simplify right side
31,527,478.08x = 803,670,374,073,922.25 - Step 5: Solve for x
x = 803,670,374,073,922.25/31,527,478.08 - Step 6: Final answer
x = 25,491,108.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.