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Finding the Third Proportional to 17,670 and 36,780

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Solution

The third proportional to 17,670 and 36,780 is: 76,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,670 : 36,780 = 36,780 : x
  2. Step 2: Convert to fraction form
    17,670/36,780 = 36,780/x
  3. Step 3: Cross multiply
    17,670x = 36,780 × 36,780
  4. Step 4: Simplify right side
    17,670x = 1,352,768,400
  5. Step 5: Solve for x
    x = 1,352,768,400/17,670
  6. Step 6: Final answer
    x = 76,557.35

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.