Home / 80,486.44-120,732.20-38,371.12

Finding the Fourth Proportional to 80,486.44, 120,732.20 and 38,371.12

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Solution

The fourth proportional to 80,486.44, 120,732.20 and 38,371.12 is: 57,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486.44 : 120,732.20 = 38,371.12 : x
  2. Step 2: Convert to fraction form
    80,486.44/120,732.20 = 38,371.12/x
  3. Step 3: Cross multiply
    80,486.44x = 120,732.20 × 38,371.12
  4. Step 4: Simplify right side
    80,486.44x = 4,632,628,938.55
  5. Step 5: Solve for x
    x = 4,632,628,938.55/80,486.44
  6. Step 6: Final answer
    x = 57,557.88

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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.