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Finding the Third Proportional to 18,774,045 and 38,986,939

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Solution

The third proportional to 18,774,045 and 38,986,939 is: 80,961,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774,045 : 38,986,939 = 38,986,939 : x
  2. Step 2: Convert to fraction form
    18,774,045/38,986,939 = 38,986,939/x
  3. Step 3: Cross multiply
    18,774,045x = 38,986,939 × 38,986,939
  4. Step 4: Simplify right side
    18,774,045x = 1,519,981,412,589,721
  5. Step 5: Solve for x
    x = 1,519,981,412,589,721/18,774,045
  6. Step 6: Final answer
    x = 80,961,849.86

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.