Home / 87,682.20-131,490.90-28,519.80

Finding the Fourth Proportional to 87,682.20, 131,490.90 and 28,519.80

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Solution

The fourth proportional to 87,682.20, 131,490.90 and 28,519.80 is: 42,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.20 : 131,490.90 = 28,519.80 : x
  2. Step 2: Convert to fraction form
    87,682.20/131,490.90 = 28,519.80/x
  3. Step 3: Cross multiply
    87,682.20x = 131,490.90 × 28,519.80
  4. Step 4: Simplify right side
    87,682.20x = 3,750,094,169.82
  5. Step 5: Solve for x
    x = 3,750,094,169.82/87,682.20
  6. Step 6: Final answer
    x = 42,769.16

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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.