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Finding the Third Proportional to 17,415 and 36,900

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Solution

The third proportional to 17,415 and 36,900 is: 78,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,415 : 36,900 = 36,900 : x
  2. Step 2: Convert to fraction form
    17,415/36,900 = 36,900/x
  3. Step 3: Cross multiply
    17,415x = 36,900 × 36,900
  4. Step 4: Simplify right side
    17,415x = 1,361,610,000
  5. Step 5: Solve for x
    x = 1,361,610,000/17,415
  6. Step 6: Final answer
    x = 78,186.05

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.