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Finding the Third Proportional to 17,390 and 37,239

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Solution

The third proportional to 17,390 and 37,239 is: 79,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,390 : 37,239 = 37,239 : x
  2. Step 2: Convert to fraction form
    17,390/37,239 = 37,239/x
  3. Step 3: Cross multiply
    17,390x = 37,239 × 37,239
  4. Step 4: Simplify right side
    17,390x = 1,386,743,121
  5. Step 5: Solve for x
    x = 1,386,743,121/17,390
  6. Step 6: Final answer
    x = 79,743.71

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.