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Finding the Fourth Proportional to 68,868, 95,049.36 and 39,077.28

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Solution

The fourth proportional to 68,868, 95,049.36 and 39,077.28 is: 53,933.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,868 : 95,049.36 = 39,077.28 : x
  2. Step 2: Convert to fraction form
    68,868/95,049.36 = 39,077.28/x
  3. Step 3: Cross multiply
    68,868x = 95,049.36 × 39,077.28
  4. Step 4: Simplify right side
    68,868x = 3,714,270,454.54
  5. Step 5: Solve for x
    x = 3,714,270,454.54/68,868
  6. Step 6: Final answer
    x = 53,933.18

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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.