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Finding the Third Proportional to 18,774,047 and 38,986,943

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Solution

The third proportional to 18,774,047 and 38,986,943 is: 80,961,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774,047 : 38,986,943 = 38,986,943 : x
  2. Step 2: Convert to fraction form
    18,774,047/38,986,943 = 38,986,943/x
  3. Step 3: Cross multiply
    18,774,047x = 38,986,943 × 38,986,943
  4. Step 4: Simplify right side
    18,774,047x = 1,519,981,724,485,249
  5. Step 5: Solve for x
    x = 1,519,981,724,485,249/18,774,047
  6. Step 6: Final answer
    x = 80,961,857.85

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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.