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Finding the Third Proportional to 9,955,406 and 21,275,500

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Solution

The third proportional to 9,955,406 and 21,275,500 is: 45,467,447.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955,406 : 21,275,500 = 21,275,500 : x
  2. Step 2: Convert to fraction form
    9,955,406/21,275,500 = 21,275,500/x
  3. Step 3: Cross multiply
    9,955,406x = 21,275,500 × 21,275,500
  4. Step 4: Simplify right side
    9,955,406x = 452,646,900,250,000
  5. Step 5: Solve for x
    x = 452,646,900,250,000/9,955,406
  6. Step 6: Final answer
    x = 45,467,447.56

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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.