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Finding the Third Proportional to 18,780,147 and 39,577,563

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Solution

The third proportional to 18,780,147 and 39,577,563 is: 83,406,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780,147 : 39,577,563 = 39,577,563 : x
  2. Step 2: Convert to fraction form
    18,780,147/39,577,563 = 39,577,563/x
  3. Step 3: Cross multiply
    18,780,147x = 39,577,563 × 39,577,563
  4. Step 4: Simplify right side
    18,780,147x = 1,566,383,493,018,969
  5. Step 5: Solve for x
    x = 1,566,383,493,018,969/18,780,147
  6. Step 6: Final answer
    x = 83,406,348.90

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.