Home / 83,581.68-115,326.24-49,583.80

Finding the Fourth Proportional to 83,581.68, 115,326.24 and 49,583.80

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Solution

The fourth proportional to 83,581.68, 115,326.24 and 49,583.80 is: 68,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,581.68 : 115,326.24 = 49,583.80 : x
  2. Step 2: Convert to fraction form
    83,581.68/115,326.24 = 49,583.80/x
  3. Step 3: Cross multiply
    83,581.68x = 115,326.24 × 49,583.80
  4. Step 4: Simplify right side
    83,581.68x = 5,718,313,218.91
  5. Step 5: Solve for x
    x = 5,718,313,218.91/83,581.68
  6. Step 6: Final answer
    x = 68,415.87

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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.