Home / 87,872.31-131,781.19-31,705.12

Finding the Fourth Proportional to 87,872.31, 131,781.19 and 31,705.12

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Solution

The fourth proportional to 87,872.31, 131,781.19 and 31,705.12 is: 47,547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,872.31 : 131,781.19 = 31,705.12 : x
  2. Step 2: Convert to fraction form
    87,872.31/131,781.19 = 31,705.12/x
  3. Step 3: Cross multiply
    87,872.31x = 131,781.19 × 31,705.12
  4. Step 4: Simplify right side
    87,872.31x = 4,178,138,442.69
  5. Step 5: Solve for x
    x = 4,178,138,442.69/87,872.31
  6. Step 6: Final answer
    x = 47,547.84

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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.