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Finding the Fourth Proportional to 68,778.26, 103,160.46 and 18,863.37

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Solution

The fourth proportional to 68,778.26, 103,160.46 and 18,863.37 is: 28,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,778.26 : 103,160.46 = 18,863.37 : x
  2. Step 2: Convert to fraction form
    68,778.26/103,160.46 = 18,863.37/x
  3. Step 3: Cross multiply
    68,778.26x = 103,160.46 × 18,863.37
  4. Step 4: Simplify right side
    68,778.26x = 1,945,953,926.35
  5. Step 5: Solve for x
    x = 1,945,953,926.35/68,778.26
  6. Step 6: Final answer
    x = 28,293.16

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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.