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Finding the Third Proportional to 30,681,722 and 68,173,939

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Solution

The third proportional to 30,681,722 and 68,173,939 is: 151,480,609.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681,722 : 68,173,939 = 68,173,939 : x
  2. Step 2: Convert to fraction form
    30,681,722/68,173,939 = 68,173,939/x
  3. Step 3: Cross multiply
    30,681,722x = 68,173,939 × 68,173,939
  4. Step 4: Simplify right side
    30,681,722x = 4,647,685,958,775,721
  5. Step 5: Solve for x
    x = 4,647,685,958,775,721/30,681,722
  6. Step 6: Final answer
    x = 151,480,609.82

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.