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Finding the Third Proportional to 21,857,555 and 47,079,040

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Solution

The third proportional to 21,857,555 and 47,079,040 is: 101,403,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857,555 : 47,079,040 = 47,079,040 : x
  2. Step 2: Convert to fraction form
    21,857,555/47,079,040 = 47,079,040/x
  3. Step 3: Cross multiply
    21,857,555x = 47,079,040 × 47,079,040
  4. Step 4: Simplify right side
    21,857,555x = 2,216,436,007,321,600
  5. Step 5: Solve for x
    x = 2,216,436,007,321,600/21,857,555
  6. Step 6: Final answer
    x = 101,403,656.87

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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.