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Finding the Fourth Proportional to 68,899.31, 95,073.70 and 38,687.93

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Solution

The fourth proportional to 68,899.31, 95,073.70 and 38,687.93 is: 53,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899.31 : 95,073.70 = 38,687.93 : x
  2. Step 2: Convert to fraction form
    68,899.31/95,073.70 = 38,687.93/x
  3. Step 3: Cross multiply
    68,899.31x = 95,073.70 × 38,687.93
  4. Step 4: Simplify right side
    68,899.31x = 3,678,204,650.44
  5. Step 5: Solve for x
    x = 3,678,204,650.44/68,899.31
  6. Step 6: Final answer
    x = 53,385.22

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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.