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Finding the Third Proportional to 38,120 and 83,620

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Solution

The third proportional to 38,120 and 83,620 is: 183,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120 : 83,620 = 83,620 : x
  2. Step 2: Convert to fraction form
    38,120/83,620 = 83,620/x
  3. Step 3: Cross multiply
    38,120x = 83,620 × 83,620
  4. Step 4: Simplify right side
    38,120x = 6,992,304,400
  5. Step 5: Solve for x
    x = 6,992,304,400/38,120
  6. Step 6: Final answer
    x = 183,428.76

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.