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Finding the Fourth Proportional to 80,459.66, 120,697.92 and 29,872.53

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Solution

The fourth proportional to 80,459.66, 120,697.92 and 29,872.53 is: 44,811.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,459.66 : 120,697.92 = 29,872.53 : x
  2. Step 2: Convert to fraction form
    80,459.66/120,697.92 = 29,872.53/x
  3. Step 3: Cross multiply
    80,459.66x = 120,697.92 × 29,872.53
  4. Step 4: Simplify right side
    80,459.66x = 3,605,552,236.14
  5. Step 5: Solve for x
    x = 3,605,552,236.14/80,459.66
  6. Step 6: Final answer
    x = 44,811.92

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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.