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Finding the Fourth Proportional to 89,940, 124,113.92 and 49,652.88

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Solution

The fourth proportional to 89,940, 124,113.92 and 49,652.88 is: 68,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,940 : 124,113.92 = 49,652.88 : x
  2. Step 2: Convert to fraction form
    89,940/124,113.92 = 49,652.88/x
  3. Step 3: Cross multiply
    89,940x = 124,113.92 × 49,652.88
  4. Step 4: Simplify right side
    89,940x = 6,162,613,576.09
  5. Step 5: Solve for x
    x = 6,162,613,576.09/89,940
  6. Step 6: Final answer
    x = 68,519.16

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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.