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Finding the Third Proportional to 43,400 and 66,380

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Solution

The third proportional to 43,400 and 66,380 is: 101,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,400 : 66,380 = 66,380 : x
  2. Step 2: Convert to fraction form
    43,400/66,380 = 66,380/x
  3. Step 3: Cross multiply
    43,400x = 66,380 × 66,380
  4. Step 4: Simplify right side
    43,400x = 4,406,304,400
  5. Step 5: Solve for x
    x = 4,406,304,400/43,400
  6. Step 6: Final answer
    x = 101,527.75

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.