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Finding the Third Proportional to 20,854,872 and 43,616,520

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Solution

The third proportional to 20,854,872 and 43,616,520 is: 91,220,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,872 : 43,616,520 = 43,616,520 : x
  2. Step 2: Convert to fraction form
    20,854,872/43,616,520 = 43,616,520/x
  3. Step 3: Cross multiply
    20,854,872x = 43,616,520 × 43,616,520
  4. Step 4: Simplify right side
    20,854,872x = 1,902,400,816,910,400
  5. Step 5: Solve for x
    x = 1,902,400,816,910,400/20,854,872
  6. Step 6: Final answer
    x = 91,220,929.91

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.