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Finding the Fourth Proportional to 45,479, 68,129.40 and 23,226.68

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Solution

The fourth proportional to 45,479, 68,129.40 and 23,226.68 is: 34,794.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,479 : 68,129.40 = 23,226.68 : x
  2. Step 2: Convert to fraction form
    45,479/68,129.40 = 23,226.68/x
  3. Step 3: Cross multiply
    45,479x = 68,129.40 × 23,226.68
  4. Step 4: Simplify right side
    45,479x = 1,582,419,772.39
  5. Step 5: Solve for x
    x = 1,582,419,772.39/45,479
  6. Step 6: Final answer
    x = 34,794.52

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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.