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Finding the Third Proportional to 18,957,660 and 40,835,478

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Solution

The third proportional to 18,957,660 and 40,835,478 is: 87,961,080.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957,660 : 40,835,478 = 40,835,478 : x
  2. Step 2: Convert to fraction form
    18,957,660/40,835,478 = 40,835,478/x
  3. Step 3: Cross multiply
    18,957,660x = 40,835,478 × 40,835,478
  4. Step 4: Simplify right side
    18,957,660x = 1,667,536,263,488,484
  5. Step 5: Solve for x
    x = 1,667,536,263,488,484/18,957,660
  6. Step 6: Final answer
    x = 87,961,080.82

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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.