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Finding the Fourth Proportional to 68,257.20, 102,462.60 and 52,743.60

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Solution

The fourth proportional to 68,257.20, 102,462.60 and 52,743.60 is: 79,174.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,257.20 : 102,462.60 = 52,743.60 : x
  2. Step 2: Convert to fraction form
    68,257.20/102,462.60 = 52,743.60/x
  3. Step 3: Cross multiply
    68,257.20x = 102,462.60 × 52,743.60
  4. Step 4: Simplify right side
    68,257.20x = 5,404,246,389.36
  5. Step 5: Solve for x
    x = 5,404,246,389.36/68,257.20
  6. Step 6: Final answer
    x = 79,174.74

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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.