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Finding the Fourth Proportional to 80,363.76, 119,947.32 and 69,642.24

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Solution

The fourth proportional to 80,363.76, 119,947.32 and 69,642.24 is: 103,944.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,363.76 : 119,947.32 = 69,642.24 : x
  2. Step 2: Convert to fraction form
    80,363.76/119,947.32 = 69,642.24/x
  3. Step 3: Cross multiply
    80,363.76x = 119,947.32 × 69,642.24
  4. Step 4: Simplify right side
    80,363.76x = 8,353,400,046.80
  5. Step 5: Solve for x
    x = 8,353,400,046.80/80,363.76
  6. Step 6: Final answer
    x = 103,944.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.