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Finding the Fourth Proportional to 80,484.72, 120,750.12 and 38,955.12

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Solution

The fourth proportional to 80,484.72, 120,750.12 and 38,955.12 is: 58,443.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.72 : 120,750.12 = 38,955.12 : x
  2. Step 2: Convert to fraction form
    80,484.72/120,750.12 = 38,955.12/x
  3. Step 3: Cross multiply
    80,484.72x = 120,750.12 × 38,955.12
  4. Step 4: Simplify right side
    80,484.72x = 4,703,835,414.61
  5. Step 5: Solve for x
    x = 4,703,835,414.61/80,484.72
  6. Step 6: Final answer
    x = 58,443.83

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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.