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Finding the Fourth Proportional to 69,447.39, 95,750.30 and 56,687.61

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Solution

The fourth proportional to 69,447.39, 95,750.30 and 56,687.61 is: 78,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,447.39 : 95,750.30 = 56,687.61 : x
  2. Step 2: Convert to fraction form
    69,447.39/95,750.30 = 56,687.61/x
  3. Step 3: Cross multiply
    69,447.39x = 95,750.30 × 56,687.61
  4. Step 4: Simplify right side
    69,447.39x = 5,427,855,380.34
  5. Step 5: Solve for x
    x = 5,427,855,380.34/69,447.39
  6. Step 6: Final answer
    x = 78,157.80

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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.