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Finding the Fourth Proportional to 80,881.75, 121,338.01 and 36,508.38

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Solution

The fourth proportional to 80,881.75, 121,338.01 and 36,508.38 is: 54,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,881.75 : 121,338.01 = 36,508.38 : x
  2. Step 2: Convert to fraction form
    80,881.75/121,338.01 = 36,508.38/x
  3. Step 3: Cross multiply
    80,881.75x = 121,338.01 × 36,508.38
  4. Step 4: Simplify right side
    80,881.75x = 4,429,853,673.77
  5. Step 5: Solve for x
    x = 4,429,853,673.77/80,881.75
  6. Step 6: Final answer
    x = 54,769.51

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1.5x scale

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.