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Finding the Fourth Proportional to 80,593.96, 120,774.28 and 45,458.88

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Solution

The fourth proportional to 80,593.96, 120,774.28 and 45,458.88 is: 68,122.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,593.96 : 120,774.28 = 45,458.88 : x
  2. Step 2: Convert to fraction form
    80,593.96/120,774.28 = 45,458.88/x
  3. Step 3: Cross multiply
    80,593.96x = 120,774.28 × 45,458.88
  4. Step 4: Simplify right side
    80,593.96x = 5,490,263,501.61
  5. Step 5: Solve for x
    x = 5,490,263,501.61/80,593.96
  6. Step 6: Final answer
    x = 68,122.52

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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.