Home / 87,682-131,542.48-40,909.36

Finding the Fourth Proportional to 87,682, 131,542.48 and 40,909.36

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Solution

The fourth proportional to 87,682, 131,542.48 and 40,909.36 is: 61,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682 : 131,542.48 = 40,909.36 : x
  2. Step 2: Convert to fraction form
    87,682/131,542.48 = 40,909.36/x
  3. Step 3: Cross multiply
    87,682x = 131,542.48 × 40,909.36
  4. Step 4: Simplify right side
    87,682x = 5,381,318,669.61
  5. Step 5: Solve for x
    x = 5,381,318,669.61/87,682
  6. Step 6: Final answer
    x = 61,373.13

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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.