Home / 80,981.26-121,471.86-41,513.20

Finding the Fourth Proportional to 80,981.26, 121,471.86 and 41,513.20

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Solution

The fourth proportional to 80,981.26, 121,471.86 and 41,513.20 is: 62,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.26 : 121,471.86 = 41,513.20 : x
  2. Step 2: Convert to fraction form
    80,981.26/121,471.86 = 41,513.20/x
  3. Step 3: Cross multiply
    80,981.26x = 121,471.86 × 41,513.20
  4. Step 4: Simplify right side
    80,981.26x = 5,042,685,618.55
  5. Step 5: Solve for x
    x = 5,042,685,618.55/80,981.26
  6. Step 6: Final answer
    x = 62,269.78

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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.