Home / 98,286.82-135,640.54-55,279.78

Finding the Fourth Proportional to 98,286.82, 135,640.54 and 55,279.78

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Solution

The fourth proportional to 98,286.82, 135,640.54 and 55,279.78 is: 76,288.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,286.82 : 135,640.54 = 55,279.78 : x
  2. Step 2: Convert to fraction form
    98,286.82/135,640.54 = 55,279.78/x
  3. Step 3: Cross multiply
    98,286.82x = 135,640.54 × 55,279.78
  4. Step 4: Simplify right side
    98,286.82x = 7,498,179,210.28
  5. Step 5: Solve for x
    x = 7,498,179,210.28/98,286.82
  6. Step 6: Final answer
    x = 76,288.76

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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.