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Finding the Fourth Proportional to 80,524, 120,820.11 and 43,074.25

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Solution

The fourth proportional to 80,524, 120,820.11 and 43,074.25 is: 64,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,524 : 120,820.11 = 43,074.25 : x
  2. Step 2: Convert to fraction form
    80,524/120,820.11 = 43,074.25/x
  3. Step 3: Cross multiply
    80,524x = 120,820.11 × 43,074.25
  4. Step 4: Simplify right side
    80,524x = 5,204,235,623.17
  5. Step 5: Solve for x
    x = 5,204,235,623.17/80,524
  6. Step 6: Final answer
    x = 64,629.62

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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.