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Finding the Third Proportional to 20,042,121 and 42,918,591

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Solution

The third proportional to 20,042,121 and 42,918,591 is: 91,906,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042,121 : 42,918,591 = 42,918,591 : x
  2. Step 2: Convert to fraction form
    20,042,121/42,918,591 = 42,918,591/x
  3. Step 3: Cross multiply
    20,042,121x = 42,918,591 × 42,918,591
  4. Step 4: Simplify right side
    20,042,121x = 1,842,005,453,425,281
  5. Step 5: Solve for x
    x = 1,842,005,453,425,281/20,042,121
  6. Step 6: Final answer
    x = 91,906,712.54

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.