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Finding the Fourth Proportional to 85,248.56, 127,909.68 and 45,759.52

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Solution

The fourth proportional to 85,248.56, 127,909.68 and 45,759.52 is: 68,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248.56 : 127,909.68 = 45,759.52 : x
  2. Step 2: Convert to fraction form
    85,248.56/127,909.68 = 45,759.52/x
  3. Step 3: Cross multiply
    85,248.56x = 127,909.68 × 45,759.52
  4. Step 4: Simplify right side
    85,248.56x = 5,853,085,560.15
  5. Step 5: Solve for x
    x = 5,853,085,560.15/85,248.56
  6. Step 6: Final answer
    x = 68,659.05

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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.