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Finding the Fourth Proportional to 68,853.44, 103,019.52 and 40,788.56

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Solution

The fourth proportional to 68,853.44, 103,019.52 and 40,788.56 is: 61,028.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,853.44 : 103,019.52 = 40,788.56 : x
  2. Step 2: Convert to fraction form
    68,853.44/103,019.52 = 40,788.56/x
  3. Step 3: Cross multiply
    68,853.44x = 103,019.52 × 40,788.56
  4. Step 4: Simplify right side
    68,853.44x = 4,202,017,872.69
  5. Step 5: Solve for x
    x = 4,202,017,872.69/68,853.44
  6. Step 6: Final answer
    x = 61,028.44

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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.