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Finding the Fourth Proportional to 68,786.62, 103,046.73 and 40,254.55

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Solution

The fourth proportional to 68,786.62, 103,046.73 and 40,254.55 is: 60,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,786.62 : 103,046.73 = 40,254.55 : x
  2. Step 2: Convert to fraction form
    68,786.62/103,046.73 = 40,254.55/x
  3. Step 3: Cross multiply
    68,786.62x = 103,046.73 × 40,254.55
  4. Step 4: Simplify right side
    68,786.62x = 4,148,099,745.12
  5. Step 5: Solve for x
    x = 4,148,099,745.12/68,786.62
  6. Step 6: Final answer
    x = 60,303.88

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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.