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Finding the Third Proportional to 18,922 and 51,266

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Solution

The third proportional to 18,922 and 51,266 is: 138,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922 : 51,266 = 51,266 : x
  2. Step 2: Convert to fraction form
    18,922/51,266 = 51,266/x
  3. Step 3: Cross multiply
    18,922x = 51,266 × 51,266
  4. Step 4: Simplify right side
    18,922x = 2,628,202,756
  5. Step 5: Solve for x
    x = 2,628,202,756/18,922
  6. Step 6: Final answer
    x = 138,896.67

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.