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Finding the Third Proportional to 30,812 and 67,375

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Solution

The third proportional to 30,812 and 67,375 is: 147,325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812 : 67,375 = 67,375 : x
  2. Step 2: Convert to fraction form
    30,812/67,375 = 67,375/x
  3. Step 3: Cross multiply
    30,812x = 67,375 × 67,375
  4. Step 4: Simplify right side
    30,812x = 4,539,390,625
  5. Step 5: Solve for x
    x = 4,539,390,625/30,812
  6. Step 6: Final answer
    x = 147,325.41

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.