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Finding the Fourth Proportional to 68,301.60, 102,517.20 and 42,057.60

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Solution

The fourth proportional to 68,301.60, 102,517.20 and 42,057.60 is: 63,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,301.60 : 102,517.20 = 42,057.60 : x
  2. Step 2: Convert to fraction form
    68,301.60/102,517.20 = 42,057.60/x
  3. Step 3: Cross multiply
    68,301.60x = 102,517.20 × 42,057.60
  4. Step 4: Simplify right side
    68,301.60x = 4,311,627,390.72
  5. Step 5: Solve for x
    x = 4,311,627,390.72/68,301.60
  6. Step 6: Final answer
    x = 63,126.30

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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.