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Finding the Third Proportional to 18,181,765 and 40,399,381

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Solution

The third proportional to 18,181,765 and 40,399,381 is: 89,766,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181,765 : 40,399,381 = 40,399,381 : x
  2. Step 2: Convert to fraction form
    18,181,765/40,399,381 = 40,399,381/x
  3. Step 3: Cross multiply
    18,181,765x = 40,399,381 × 40,399,381
  4. Step 4: Simplify right side
    18,181,765x = 1,632,109,985,183,161
  5. Step 5: Solve for x
    x = 1,632,109,985,183,161/18,181,765
  6. Step 6: Final answer
    x = 89,766,311.75

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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.