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Finding the Third Proportional to 18,270 and 39,671

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Solution

The third proportional to 18,270 and 39,671 is: 86,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270 : 39,671 = 39,671 : x
  2. Step 2: Convert to fraction form
    18,270/39,671 = 39,671/x
  3. Step 3: Cross multiply
    18,270x = 39,671 × 39,671
  4. Step 4: Simplify right side
    18,270x = 1,573,788,241
  5. Step 5: Solve for x
    x = 1,573,788,241/18,270
  6. Step 6: Final answer
    x = 86,140.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.