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Finding the Third Proportional to 21,939,778 and 47,251,100

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Solution

The third proportional to 21,939,778 and 47,251,100 is: 101,763,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939,778 : 47,251,100 = 47,251,100 : x
  2. Step 2: Convert to fraction form
    21,939,778/47,251,100 = 47,251,100/x
  3. Step 3: Cross multiply
    21,939,778x = 47,251,100 × 47,251,100
  4. Step 4: Simplify right side
    21,939,778x = 2,232,666,451,210,000
  5. Step 5: Solve for x
    x = 2,232,666,451,210,000/21,939,778
  6. Step 6: Final answer
    x = 101,763,402.13

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.