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Finding the Third Proportional to 40,347,720 and 87,553,872

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Solution

The third proportional to 40,347,720 and 87,553,872 is: 189,990,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,347,720 : 87,553,872 = 87,553,872 : x
  2. Step 2: Convert to fraction form
    40,347,720/87,553,872 = 87,553,872/x
  3. Step 3: Cross multiply
    40,347,720x = 87,553,872 × 87,553,872
  4. Step 4: Simplify right side
    40,347,720x = 7,665,680,502,192,384
  5. Step 5: Solve for x
    x = 7,665,680,502,192,384/40,347,720
  6. Step 6: Final answer
    x = 189,990,425.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.