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Finding the Third Proportional to 18,706,405 and 40,197,542

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Solution

The third proportional to 18,706,405 and 40,197,542 is: 86,379,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706,405 : 40,197,542 = 40,197,542 : x
  2. Step 2: Convert to fraction form
    18,706,405/40,197,542 = 40,197,542/x
  3. Step 3: Cross multiply
    18,706,405x = 40,197,542 × 40,197,542
  4. Step 4: Simplify right side
    18,706,405x = 1,615,842,382,841,764
  5. Step 5: Solve for x
    x = 1,615,842,382,841,764/18,706,405
  6. Step 6: Final answer
    x = 86,379,097.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.