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Finding the Third Proportional to 43,918 and 67,938

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Solution

The third proportional to 43,918 and 67,938 is: 105,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,918 : 67,938 = 67,938 : x
  2. Step 2: Convert to fraction form
    43,918/67,938 = 67,938/x
  3. Step 3: Cross multiply
    43,918x = 67,938 × 67,938
  4. Step 4: Simplify right side
    43,918x = 4,615,571,844
  5. Step 5: Solve for x
    x = 4,615,571,844/43,918
  6. Step 6: Final answer
    x = 105,095.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.