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Finding the Fourth Proportional to 80,997.39, 111,776.76 and 45,188.91

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Solution

The fourth proportional to 80,997.39, 111,776.76 and 45,188.91 is: 62,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.39 : 111,776.76 = 45,188.91 : x
  2. Step 2: Convert to fraction form
    80,997.39/111,776.76 = 45,188.91/x
  3. Step 3: Cross multiply
    80,997.39x = 111,776.76 × 45,188.91
  4. Step 4: Simplify right side
    80,997.39x = 5,051,069,947.73
  5. Step 5: Solve for x
    x = 5,051,069,947.73/80,997.39
  6. Step 6: Final answer
    x = 62,360.90

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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.