Home / 87,449.48-131,178.28-28,289.76

Finding the Fourth Proportional to 87,449.48, 131,178.28 and 28,289.76

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Solution

The fourth proportional to 87,449.48, 131,178.28 and 28,289.76 is: 42,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,449.48 : 131,178.28 = 28,289.76 : x
  2. Step 2: Convert to fraction form
    87,449.48/131,178.28 = 28,289.76/x
  3. Step 3: Cross multiply
    87,449.48x = 131,178.28 × 28,289.76
  4. Step 4: Simplify right side
    87,449.48x = 3,711,002,058.41
  5. Step 5: Solve for x
    x = 3,711,002,058.41/87,449.48
  6. Step 6: Final answer
    x = 42,435.95

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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.