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Finding the Fourth Proportional to 87,491.98, 131,258.87 and 28,327.71

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Solution

The fourth proportional to 87,491.98, 131,258.87 and 28,327.71 is: 42,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,491.98 : 131,258.87 = 28,327.71 : x
  2. Step 2: Convert to fraction form
    87,491.98/131,258.87 = 28,327.71/x
  3. Step 3: Cross multiply
    87,491.98x = 131,258.87 × 28,327.71
  4. Step 4: Simplify right side
    87,491.98x = 3,718,263,204.29
  5. Step 5: Solve for x
    x = 3,718,263,204.29/87,491.98
  6. Step 6: Final answer
    x = 42,498.33

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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.