Home / 87,654.85-131,515.11-45,508.63

Finding the Fourth Proportional to 87,654.85, 131,515.11 and 45,508.63

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Solution

The fourth proportional to 87,654.85, 131,515.11 and 45,508.63 is: 68,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,654.85 : 131,515.11 = 45,508.63 : x
  2. Step 2: Convert to fraction form
    87,654.85/131,515.11 = 45,508.63/x
  3. Step 3: Cross multiply
    87,654.85x = 131,515.11 × 45,508.63
  4. Step 4: Simplify right side
    87,654.85x = 5,985,072,480.40
  5. Step 5: Solve for x
    x = 5,985,072,480.40/87,654.85
  6. Step 6: Final answer
    x = 68,279.99

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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.