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Finding the Fourth Proportional to 80,872.84, 111,607.95 and 45,062.88

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Solution

The fourth proportional to 80,872.84, 111,607.95 and 45,062.88 is: 62,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,872.84 : 111,607.95 = 45,062.88 : x
  2. Step 2: Convert to fraction form
    80,872.84/111,607.95 = 45,062.88/x
  3. Step 3: Cross multiply
    80,872.84x = 111,607.95 × 45,062.88
  4. Step 4: Simplify right side
    80,872.84x = 5,029,375,657.90
  5. Step 5: Solve for x
    x = 5,029,375,657.90/80,872.84
  6. Step 6: Final answer
    x = 62,188.69

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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.