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Finding the Fourth Proportional to 85,301.69, 127,947.90 and 26,137.52

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Solution

The fourth proportional to 85,301.69, 127,947.90 and 26,137.52 is: 39,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,301.69 : 127,947.90 = 26,137.52 : x
  2. Step 2: Convert to fraction form
    85,301.69/127,947.90 = 26,137.52/x
  3. Step 3: Cross multiply
    85,301.69x = 127,947.90 × 26,137.52
  4. Step 4: Simplify right side
    85,301.69x = 3,344,241,115.08
  5. Step 5: Solve for x
    x = 3,344,241,115.08/85,301.69
  6. Step 6: Final answer
    x = 39,204.87

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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.