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Finding the Fourth Proportional to 95,128.68, 131,278.68 and 52,687.92

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Solution

The fourth proportional to 95,128.68, 131,278.68 and 52,687.92 is: 72,709.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,128.68 : 131,278.68 = 52,687.92 : x
  2. Step 2: Convert to fraction form
    95,128.68/131,278.68 = 52,687.92/x
  3. Step 3: Cross multiply
    95,128.68x = 131,278.68 × 52,687.92
  4. Step 4: Simplify right side
    95,128.68x = 6,916,800,589.55
  5. Step 5: Solve for x
    x = 6,916,800,589.55/95,128.68
  6. Step 6: Final answer
    x = 72,709.94

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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.