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Finding the Third Proportional to 43,402 and 67,641

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Solution

The third proportional to 43,402 and 67,641 is: 105,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,402 : 67,641 = 67,641 : x
  2. Step 2: Convert to fraction form
    43,402/67,641 = 67,641/x
  3. Step 3: Cross multiply
    43,402x = 67,641 × 67,641
  4. Step 4: Simplify right side
    43,402x = 4,575,304,881
  5. Step 5: Solve for x
    x = 4,575,304,881/43,402
  6. Step 6: Final answer
    x = 105,416.91

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.