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Finding the Third Proportional to 42,965,940 and 87,917,403

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Solution

The third proportional to 42,965,940 and 87,917,403 is: 179,897,606.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,965,940 : 87,917,403 = 87,917,403 : x
  2. Step 2: Convert to fraction form
    42,965,940/87,917,403 = 87,917,403/x
  3. Step 3: Cross multiply
    42,965,940x = 87,917,403 × 87,917,403
  4. Step 4: Simplify right side
    42,965,940x = 7,729,469,750,264,409
  5. Step 5: Solve for x
    x = 7,729,469,750,264,409/42,965,940
  6. Step 6: Final answer
    x = 179,897,606.11

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.