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Finding the Fourth Proportional to 80,350.62, 120,452.11 and 42,936.51

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Solution

The fourth proportional to 80,350.62, 120,452.11 and 42,936.51 is: 64,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,350.62 : 120,452.11 = 42,936.51 : x
  2. Step 2: Convert to fraction form
    80,350.62/120,452.11 = 42,936.51/x
  3. Step 3: Cross multiply
    80,350.62x = 120,452.11 × 42,936.51
  4. Step 4: Simplify right side
    80,350.62x = 5,171,793,811.41
  5. Step 5: Solve for x
    x = 5,171,793,811.41/80,350.62
  6. Step 6: Final answer
    x = 64,365.33

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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.