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Finding the Fourth Proportional to 87,333.70, 131,000.55 and 31,951.30

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Solution

The fourth proportional to 87,333.70, 131,000.55 and 31,951.30 is: 47,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.70 : 131,000.55 = 31,951.30 : x
  2. Step 2: Convert to fraction form
    87,333.70/131,000.55 = 31,951.30/x
  3. Step 3: Cross multiply
    87,333.70x = 131,000.55 × 31,951.30
  4. Step 4: Simplify right side
    87,333.70x = 4,185,637,873.22
  5. Step 5: Solve for x
    x = 4,185,637,873.22/87,333.70
  6. Step 6: Final answer
    x = 47,926.95

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1.5x scale

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.