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Finding the Third Proportional to 21,797,991 and 51,383,970

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Solution

The third proportional to 21,797,991 and 51,383,970 is: 121,126,408.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797,991 : 51,383,970 = 51,383,970 : x
  2. Step 2: Convert to fraction form
    21,797,991/51,383,970 = 51,383,970/x
  3. Step 3: Cross multiply
    21,797,991x = 51,383,970 × 51,383,970
  4. Step 4: Simplify right side
    21,797,991x = 2,640,312,372,960,900
  5. Step 5: Solve for x
    x = 2,640,312,372,960,900/21,797,991
  6. Step 6: Final answer
    x = 121,126,408.99

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.