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Finding the Fourth Proportional to 90,920.80, 136,389.08 and 27,755.16

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Solution

The fourth proportional to 90,920.80, 136,389.08 and 27,755.16 is: 41,635.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,920.80 : 136,389.08 = 27,755.16 : x
  2. Step 2: Convert to fraction form
    90,920.80/136,389.08 = 27,755.16/x
  3. Step 3: Cross multiply
    90,920.80x = 136,389.08 × 27,755.16
  4. Step 4: Simplify right side
    90,920.80x = 3,785,500,737.65
  5. Step 5: Solve for x
    x = 3,785,500,737.65/90,920.80
  6. Step 6: Final answer
    x = 41,635.15

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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.