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Finding the Third Proportional to 47,172 and 101,720

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Solution

The third proportional to 47,172 and 101,720 is: 219,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,172 : 101,720 = 101,720 : x
  2. Step 2: Convert to fraction form
    47,172/101,720 = 101,720/x
  3. Step 3: Cross multiply
    47,172x = 101,720 × 101,720
  4. Step 4: Simplify right side
    47,172x = 10,346,958,400
  5. Step 5: Solve for x
    x = 10,346,958,400/47,172
  6. Step 6: Final answer
    x = 219,345.34

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.