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Finding the Third Proportional to 15,170 and 31,069

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Solution

The third proportional to 15,170 and 31,069 is: 63,631.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170 : 31,069 = 31,069 : x
  2. Step 2: Convert to fraction form
    15,170/31,069 = 31,069/x
  3. Step 3: Cross multiply
    15,170x = 31,069 × 31,069
  4. Step 4: Simplify right side
    15,170x = 965,282,761
  5. Step 5: Solve for x
    x = 965,282,761/15,170
  6. Step 6: Final answer
    x = 63,631.03

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.