Home / 87,711-131,573.02-28,542.12

Finding the Fourth Proportional to 87,711, 131,573.02 and 28,542.12

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Solution

The fourth proportional to 87,711, 131,573.02 and 28,542.12 is: 42,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711 : 131,573.02 = 28,542.12 : x
  2. Step 2: Convert to fraction form
    87,711/131,573.02 = 28,542.12/x
  3. Step 3: Cross multiply
    87,711x = 131,573.02 × 28,542.12
  4. Step 4: Simplify right side
    87,711x = 3,755,372,925.60
  5. Step 5: Solve for x
    x = 3,755,372,925.60/87,711
  6. Step 6: Final answer
    x = 42,815.30

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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.