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Finding the Fourth Proportional to 80,672.74, 111,338.76 and 48,842.20

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Solution

The fourth proportional to 80,672.74, 111,338.76 and 48,842.20 is: 67,408.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.74 : 111,338.76 = 48,842.20 : x
  2. Step 2: Convert to fraction form
    80,672.74/111,338.76 = 48,842.20/x
  3. Step 3: Cross multiply
    80,672.74x = 111,338.76 × 48,842.20
  4. Step 4: Simplify right side
    80,672.74x = 5,438,029,983.67
  5. Step 5: Solve for x
    x = 5,438,029,983.67/80,672.74
  6. Step 6: Final answer
    x = 67,408.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.