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Finding the Fourth Proportional to 85,425.15, 127,835.33 and 74,452.35

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Solution

The fourth proportional to 85,425.15, 127,835.33 and 74,452.35 is: 111,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,425.15 : 127,835.33 = 74,452.35 : x
  2. Step 2: Convert to fraction form
    85,425.15/127,835.33 = 74,452.35/x
  3. Step 3: Cross multiply
    85,425.15x = 127,835.33 × 74,452.35
  4. Step 4: Simplify right side
    85,425.15x = 9,517,640,359.26
  5. Step 5: Solve for x
    x = 9,517,640,359.26/85,425.15
  6. Step 6: Final answer
    x = 111,414.97

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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.