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Finding the Third Proportional to 18,962,521 and 40,802,990

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Solution

The third proportional to 18,962,521 and 40,802,990 is: 87,798,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962,521 : 40,802,990 = 40,802,990 : x
  2. Step 2: Convert to fraction form
    18,962,521/40,802,990 = 40,802,990/x
  3. Step 3: Cross multiply
    18,962,521x = 40,802,990 × 40,802,990
  4. Step 4: Simplify right side
    18,962,521x = 1,664,883,992,940,100
  5. Step 5: Solve for x
    x = 1,664,883,992,940,100/18,962,521
  6. Step 6: Final answer
    x = 87,798,663.11

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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.