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Finding the Fourth Proportional to 68,974.50, 95,184.92 and 39,166.50

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Solution

The fourth proportional to 68,974.50, 95,184.92 and 39,166.50 is: 54,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,974.50 : 95,184.92 = 39,166.50 : x
  2. Step 2: Convert to fraction form
    68,974.50/95,184.92 = 39,166.50/x
  3. Step 3: Cross multiply
    68,974.50x = 95,184.92 × 39,166.50
  4. Step 4: Simplify right side
    68,974.50x = 3,728,060,169.18
  5. Step 5: Solve for x
    x = 3,728,060,169.18/68,974.50
  6. Step 6: Final answer
    x = 54,049.83

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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.