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Finding the Fourth Proportional to 68,691.76, 95,279.59 and 66,870.88

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Solution

The fourth proportional to 68,691.76, 95,279.59 and 66,870.88 is: 92,753.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,691.76 : 95,279.59 = 66,870.88 : x
  2. Step 2: Convert to fraction form
    68,691.76/95,279.59 = 66,870.88/x
  3. Step 3: Cross multiply
    68,691.76x = 95,279.59 × 66,870.88
  4. Step 4: Simplify right side
    68,691.76x = 6,371,430,029.34
  5. Step 5: Solve for x
    x = 6,371,430,029.34/68,691.76
  6. Step 6: Final answer
    x = 92,753.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.