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Finding the Fourth Proportional to 90,660, 135,979.10 and 24,105.22

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Solution

The fourth proportional to 90,660, 135,979.10 and 24,105.22 is: 36,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660 : 135,979.10 = 24,105.22 : x
  2. Step 2: Convert to fraction form
    90,660/135,979.10 = 24,105.22/x
  3. Step 3: Cross multiply
    90,660x = 135,979.10 × 24,105.22
  4. Step 4: Simplify right side
    90,660x = 3,277,806,120.90
  5. Step 5: Solve for x
    x = 3,277,806,120.90/90,660
  6. Step 6: Final answer
    x = 36,154.93

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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.