Home / 68,939.18-95,132.42-38,725.78

Finding the Fourth Proportional to 68,939.18, 95,132.42 and 38,725.78

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Solution

The fourth proportional to 68,939.18, 95,132.42 and 38,725.78 is: 53,439.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,939.18 : 95,132.42 = 38,725.78 : x
  2. Step 2: Convert to fraction form
    68,939.18/95,132.42 = 38,725.78/x
  3. Step 3: Cross multiply
    68,939.18x = 95,132.42 × 38,725.78
  4. Step 4: Simplify right side
    68,939.18x = 3,684,076,881.55
  5. Step 5: Solve for x
    x = 3,684,076,881.55/68,939.18
  6. Step 6: Final answer
    x = 53,439.52

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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.