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Finding the Third Proportional to 18,659,986 and 38,809,683

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Solution

The third proportional to 18,659,986 and 38,809,683 is: 80,717,718.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659,986 : 38,809,683 = 38,809,683 : x
  2. Step 2: Convert to fraction form
    18,659,986/38,809,683 = 38,809,683/x
  3. Step 3: Cross multiply
    18,659,986x = 38,809,683 × 38,809,683
  4. Step 4: Simplify right side
    18,659,986x = 1,506,191,494,560,489
  5. Step 5: Solve for x
    x = 1,506,191,494,560,489/18,659,986
  6. Step 6: Final answer
    x = 80,717,718.36

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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.