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Finding the Third Proportional to 18,878.72 and 40,650.28

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Solution

The third proportional to 18,878.72 and 40,650.28 is: 87,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.72 : 40,650.28 = 40,650.28 : x
  2. Step 2: Convert to fraction form
    18,878.72/40,650.28 = 40,650.28/x
  3. Step 3: Cross multiply
    18,878.72x = 40,650.28 × 40,650.28
  4. Step 4: Simplify right side
    18,878.72x = 1,652,445,365.70
  5. Step 5: Solve for x
    x = 1,652,445,365.70/18,878.72
  6. Step 6: Final answer
    x = 87,529.53

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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.