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Finding the Fourth Proportional to 68,773.32, 103,119.84 and 21,375.56

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Solution

The fourth proportional to 68,773.32, 103,119.84 and 21,375.56 is: 32,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,773.32 : 103,119.84 = 21,375.56 : x
  2. Step 2: Convert to fraction form
    68,773.32/103,119.84 = 21,375.56/x
  3. Step 3: Cross multiply
    68,773.32x = 103,119.84 × 21,375.56
  4. Step 4: Simplify right side
    68,773.32x = 2,204,244,327.11
  5. Step 5: Solve for x
    x = 2,204,244,327.11/68,773.32
  6. Step 6: Final answer
    x = 32,050.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.