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Finding the Third Proportional to 19,902 and 41,847

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Solution

The third proportional to 19,902 and 41,847 is: 87,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902 : 41,847 = 41,847 : x
  2. Step 2: Convert to fraction form
    19,902/41,847 = 41,847/x
  3. Step 3: Cross multiply
    19,902x = 41,847 × 41,847
  4. Step 4: Simplify right side
    19,902x = 1,751,171,409
  5. Step 5: Solve for x
    x = 1,751,171,409/19,902
  6. Step 6: Final answer
    x = 87,989.72

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These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.