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Finding the Third Proportional to 30,443 and 65,422

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Solution

The third proportional to 30,443 and 65,422 is: 140,591.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443 : 65,422 = 65,422 : x
  2. Step 2: Convert to fraction form
    30,443/65,422 = 65,422/x
  3. Step 3: Cross multiply
    30,443x = 65,422 × 65,422
  4. Step 4: Simplify right side
    30,443x = 4,280,038,084
  5. Step 5: Solve for x
    x = 4,280,038,084/30,443
  6. Step 6: Final answer
    x = 140,591.86

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.