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Finding the Fourth Proportional to 85,367.70, 117,819.30 and 47,644.38

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Solution

The fourth proportional to 85,367.70, 117,819.30 and 47,644.38 is: 65,755.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,367.70 : 117,819.30 = 47,644.38 : x
  2. Step 2: Convert to fraction form
    85,367.70/117,819.30 = 47,644.38/x
  3. Step 3: Cross multiply
    85,367.70x = 117,819.30 × 47,644.38
  4. Step 4: Simplify right side
    85,367.70x = 5,613,427,500.53
  5. Step 5: Solve for x
    x = 5,613,427,500.53/85,367.70
  6. Step 6: Final answer
    x = 65,755.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.