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Finding the Fourth Proportional to 89,765.48, 123,877.19 and 49,480.79

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Solution

The fourth proportional to 89,765.48, 123,877.19 and 49,480.79 is: 68,283.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,765.48 : 123,877.19 = 49,480.79 : x
  2. Step 2: Convert to fraction form
    89,765.48/123,877.19 = 49,480.79/x
  3. Step 3: Cross multiply
    89,765.48x = 123,877.19 × 49,480.79
  4. Step 4: Simplify right side
    89,765.48x = 6,129,540,357.39
  5. Step 5: Solve for x
    x = 6,129,540,357.39/89,765.48
  6. Step 6: Final answer
    x = 68,283.94

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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.