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Finding the Fourth Proportional to 68,230.60, 102,309.45 and 28,743.10

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Solution

The fourth proportional to 68,230.60, 102,309.45 and 28,743.10 is: 43,099.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,230.60 : 102,309.45 = 28,743.10 : x
  2. Step 2: Convert to fraction form
    68,230.60/102,309.45 = 28,743.10/x
  3. Step 3: Cross multiply
    68,230.60x = 102,309.45 × 28,743.10
  4. Step 4: Simplify right side
    68,230.60x = 2,940,690,752.30
  5. Step 5: Solve for x
    x = 2,940,690,752.30/68,230.60
  6. Step 6: Final answer
    x = 43,099.29

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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.