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Finding the Third Proportional to 40,388,962 and 86,936,516

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Solution

The third proportional to 40,388,962 and 86,936,516 is: 187,129,290.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,388,962 : 86,936,516 = 86,936,516 : x
  2. Step 2: Convert to fraction form
    40,388,962/86,936,516 = 86,936,516/x
  3. Step 3: Cross multiply
    40,388,962x = 86,936,516 × 86,936,516
  4. Step 4: Simplify right side
    40,388,962x = 7,557,957,814,218,256
  5. Step 5: Solve for x
    x = 7,557,957,814,218,256/40,388,962
  6. Step 6: Final answer
    x = 187,129,290.78

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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.