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Finding the Fourth Proportional to 68,925.60, 103,215.60 and 55,101.60

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Solution

The fourth proportional to 68,925.60, 103,215.60 and 55,101.60 is: 82,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,925.60 : 103,215.60 = 55,101.60 : x
  2. Step 2: Convert to fraction form
    68,925.60/103,215.60 = 55,101.60/x
  3. Step 3: Cross multiply
    68,925.60x = 103,215.60 × 55,101.60
  4. Step 4: Simplify right side
    68,925.60x = 5,687,344,704.96
  5. Step 5: Solve for x
    x = 5,687,344,704.96/68,925.60
  6. Step 6: Final answer
    x = 82,514.26

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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.