Home / 68,631.20-102,976.38-26,540.90

Finding the Fourth Proportional to 68,631.20, 102,976.38 and 26,540.90

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Solution

The fourth proportional to 68,631.20, 102,976.38 and 26,540.90 is: 39,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,631.20 : 102,976.38 = 26,540.90 : x
  2. Step 2: Convert to fraction form
    68,631.20/102,976.38 = 26,540.90/x
  3. Step 3: Cross multiply
    68,631.20x = 102,976.38 × 26,540.90
  4. Step 4: Simplify right side
    68,631.20x = 2,733,085,289.06
  5. Step 5: Solve for x
    x = 2,733,085,289.06/68,631.20
  6. Step 6: Final answer
    x = 39,822.78

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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.