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Finding the Third Proportional to 18,773,781.75 and 38,986,427.25

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Solution

The third proportional to 18,773,781.75 and 38,986,427.25 is: 80,960,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773,781.75 : 38,986,427.25 = 38,986,427.25 : x
  2. Step 2: Convert to fraction form
    18,773,781.75/38,986,427.25 = 38,986,427.25/x
  3. Step 3: Cross multiply
    18,773,781.75x = 38,986,427.25 × 38,986,427.25
  4. Step 4: Simplify right side
    18,773,781.75x = 1,519,941,509,719,542.50
  5. Step 5: Solve for x
    x = 1,519,941,509,719,542.50/18,773,781.75
  6. Step 6: Final answer
    x = 80,960,859.67

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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.