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Finding the Third Proportional to 18,512,120 and 39,869,028

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Solution

The third proportional to 18,512,120 and 39,869,028 is: 85,864,795.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512,120 : 39,869,028 = 39,869,028 : x
  2. Step 2: Convert to fraction form
    18,512,120/39,869,028 = 39,869,028/x
  3. Step 3: Cross multiply
    18,512,120x = 39,869,028 × 39,869,028
  4. Step 4: Simplify right side
    18,512,120x = 1,589,539,393,664,784
  5. Step 5: Solve for x
    x = 1,589,539,393,664,784/18,512,120
  6. Step 6: Final answer
    x = 85,864,795.26

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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.