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Finding the Third Proportional to 66,938 and 89,238

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Solution

The third proportional to 66,938 and 89,238 is: 118,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,938 : 89,238 = 89,238 : x
  2. Step 2: Convert to fraction form
    66,938/89,238 = 89,238/x
  3. Step 3: Cross multiply
    66,938x = 89,238 × 89,238
  4. Step 4: Simplify right side
    66,938x = 7,963,420,644
  5. Step 5: Solve for x
    x = 7,963,420,644/66,938
  6. Step 6: Final answer
    x = 118,967.11

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.