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Finding the Third Proportional to 8,121,722 and 18,058,942

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Solution

The third proportional to 8,121,722 and 18,058,942 is: 40,154,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121,722 : 18,058,942 = 18,058,942 : x
  2. Step 2: Convert to fraction form
    8,121,722/18,058,942 = 18,058,942/x
  3. Step 3: Cross multiply
    8,121,722x = 18,058,942 × 18,058,942
  4. Step 4: Simplify right side
    8,121,722x = 326,125,386,159,364
  5. Step 5: Solve for x
    x = 326,125,386,159,364/8,121,722
  6. Step 6: Final answer
    x = 40,154,709.33

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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.