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Finding the Fourth Proportional to 90,612.27, 135,939.67 and 27,432.88

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Solution

The fourth proportional to 90,612.27, 135,939.67 and 27,432.88 is: 41,155.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,612.27 : 135,939.67 = 27,432.88 : x
  2. Step 2: Convert to fraction form
    90,612.27/135,939.67 = 27,432.88/x
  3. Step 3: Cross multiply
    90,612.27x = 135,939.67 × 27,432.88
  4. Step 4: Simplify right side
    90,612.27x = 3,729,216,245.92
  5. Step 5: Solve for x
    x = 3,729,216,245.92/90,612.27
  6. Step 6: Final answer
    x = 41,155.75

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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.