Home / 90,687.38-136,034.10-40,767.62

Finding the Fourth Proportional to 90,687.38, 136,034.10 and 40,767.62

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Solution

The fourth proportional to 90,687.38, 136,034.10 and 40,767.62 is: 61,152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.38 : 136,034.10 = 40,767.62 : x
  2. Step 2: Convert to fraction form
    90,687.38/136,034.10 = 40,767.62/x
  3. Step 3: Cross multiply
    90,687.38x = 136,034.10 × 40,767.62
  4. Step 4: Simplify right side
    90,687.38x = 5,545,785,815.67
  5. Step 5: Solve for x
    x = 5,545,785,815.67/90,687.38
  6. Step 6: Final answer
    x = 61,152.79

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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.