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Finding the Fourth Proportional to 90,344.52, 135,505.26 and 23,789.79

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Solution

The fourth proportional to 90,344.52, 135,505.26 and 23,789.79 is: 35,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,344.52 : 135,505.26 = 23,789.79 : x
  2. Step 2: Convert to fraction form
    90,344.52/135,505.26 = 23,789.79/x
  3. Step 3: Cross multiply
    90,344.52x = 135,505.26 × 23,789.79
  4. Step 4: Simplify right side
    90,344.52x = 3,223,641,679.30
  5. Step 5: Solve for x
    x = 3,223,641,679.30/90,344.52
  6. Step 6: Final answer
    x = 35,681.65

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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.