Home / 87,612.59-131,439.54-28,443.71

Finding the Fourth Proportional to 87,612.59, 131,439.54 and 28,443.71

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Solution

The fourth proportional to 87,612.59, 131,439.54 and 28,443.71 is: 42,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,612.59 : 131,439.54 = 28,443.71 : x
  2. Step 2: Convert to fraction form
    87,612.59/131,439.54 = 28,443.71/x
  3. Step 3: Cross multiply
    87,612.59x = 131,439.54 × 28,443.71
  4. Step 4: Simplify right side
    87,612.59x = 3,738,627,501.10
  5. Step 5: Solve for x
    x = 3,738,627,501.10/87,612.59
  6. Step 6: Final answer
    x = 42,672.27

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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.