Home / 87,851.80-131,471.50-71,872.12

Finding the Fourth Proportional to 87,851.80, 131,471.50 and 71,872.12

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Solution

The fourth proportional to 87,851.80, 131,471.50 and 71,872.12 is: 107,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,851.80 : 131,471.50 = 71,872.12 : x
  2. Step 2: Convert to fraction form
    87,851.80/131,471.50 = 71,872.12/x
  3. Step 3: Cross multiply
    87,851.80x = 131,471.50 × 71,872.12
  4. Step 4: Simplify right side
    87,851.80x = 9,449,135,424.58
  5. Step 5: Solve for x
    x = 9,449,135,424.58/87,851.80
  6. Step 6: Final answer
    x = 107,557.68

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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.