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Finding the Fourth Proportional to 87,511.80, 131,282.10 and 37,615.80

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Solution

The fourth proportional to 87,511.80, 131,282.10 and 37,615.80 is: 56,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.80 : 131,282.10 = 37,615.80 : x
  2. Step 2: Convert to fraction form
    87,511.80/131,282.10 = 37,615.80/x
  3. Step 3: Cross multiply
    87,511.80x = 131,282.10 × 37,615.80
  4. Step 4: Simplify right side
    87,511.80x = 4,938,281,217.18
  5. Step 5: Solve for x
    x = 4,938,281,217.18/87,511.80
  6. Step 6: Final answer
    x = 56,429.89

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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.