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Finding the Third Proportional to 8,728,438.50 and 18,967,714.31

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Solution

The third proportional to 8,728,438.50 and 18,967,714.31 is: 41,218,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728,438.50 : 18,967,714.31 = 18,967,714.31 : x
  2. Step 2: Convert to fraction form
    8,728,438.50/18,967,714.31 = 18,967,714.31/x
  3. Step 3: Cross multiply
    8,728,438.50x = 18,967,714.31 × 18,967,714.31
  4. Step 4: Simplify right side
    8,728,438.50x = 359,774,186,240,617.38
  5. Step 5: Solve for x
    x = 359,774,186,240,617.38/8,728,438.50
  6. Step 6: Final answer
    x = 41,218,619.60

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.