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Finding the Fourth Proportional to 68,164.60, 102,246.90 and 43,232.80

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Solution

The fourth proportional to 68,164.60, 102,246.90 and 43,232.80 is: 64,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,164.60 : 102,246.90 = 43,232.80 : x
  2. Step 2: Convert to fraction form
    68,164.60/102,246.90 = 43,232.80/x
  3. Step 3: Cross multiply
    68,164.60x = 102,246.90 × 43,232.80
  4. Step 4: Simplify right side
    68,164.60x = 4,420,419,778.32
  5. Step 5: Solve for x
    x = 4,420,419,778.32/68,164.60
  6. Step 6: Final answer
    x = 64,849.20

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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.