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Finding the Fourth Proportional to 91,244.64, 136,940.67 and 38,691.03

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Solution

The fourth proportional to 91,244.64, 136,940.67 and 38,691.03 is: 58,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,244.64 : 136,940.67 = 38,691.03 : x
  2. Step 2: Convert to fraction form
    91,244.64/136,940.67 = 38,691.03/x
  3. Step 3: Cross multiply
    91,244.64x = 136,940.67 × 38,691.03
  4. Step 4: Simplify right side
    91,244.64x = 5,298,375,571.19
  5. Step 5: Solve for x
    x = 5,298,375,571.19/91,244.64
  6. Step 6: Final answer
    x = 58,067.80

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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.