Home / 87,451.28-131,176.08-28,285.64

Finding the Fourth Proportional to 87,451.28, 131,176.08 and 28,285.64

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Solution

The fourth proportional to 87,451.28, 131,176.08 and 28,285.64 is: 42,428.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,451.28 : 131,176.08 = 28,285.64 : x
  2. Step 2: Convert to fraction form
    87,451.28/131,176.08 = 28,285.64/x
  3. Step 3: Cross multiply
    87,451.28x = 131,176.08 × 28,285.64
  4. Step 4: Simplify right side
    87,451.28x = 3,710,399,375.49
  5. Step 5: Solve for x
    x = 3,710,399,375.49/87,451.28
  6. Step 6: Final answer
    x = 42,428.19

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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.