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Finding the Fourth Proportional to 80,484.48, 120,726.24 and 43,781.76

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Solution

The fourth proportional to 80,484.48, 120,726.24 and 43,781.76 is: 65,672.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.48 : 120,726.24 = 43,781.76 : x
  2. Step 2: Convert to fraction form
    80,484.48/120,726.24 = 43,781.76/x
  3. Step 3: Cross multiply
    80,484.48x = 120,726.24 × 43,781.76
  4. Step 4: Simplify right side
    80,484.48x = 5,285,607,265.38
  5. Step 5: Solve for x
    x = 5,285,607,265.38/80,484.48
  6. Step 6: Final answer
    x = 65,672.38

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1.5x scale

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.