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Finding the Third Proportional to 18,773,959.78 and 38,986,760.53

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Solution

The third proportional to 18,773,959.78 and 38,986,760.53 is: 80,961,476.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773,959.78 : 38,986,760.53 = 38,986,760.53 : x
  2. Step 2: Convert to fraction form
    18,773,959.78/38,986,760.53 = 38,986,760.53/x
  3. Step 3: Cross multiply
    18,773,959.78x = 38,986,760.53 × 38,986,760.53
  4. Step 4: Simplify right side
    18,773,959.78x = 1,519,967,496,721,032.75
  5. Step 5: Solve for x
    x = 1,519,967,496,721,032.75/18,773,959.78
  6. Step 6: Final answer
    x = 80,961,476.13

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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.