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Finding the Third Proportional to 18,612.28 and 40,140.56

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Solution

The third proportional to 18,612.28 and 40,140.56 is: 86,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.28 : 40,140.56 = 40,140.56 : x
  2. Step 2: Convert to fraction form
    18,612.28/40,140.56 = 40,140.56/x
  3. Step 3: Cross multiply
    18,612.28x = 40,140.56 × 40,140.56
  4. Step 4: Simplify right side
    18,612.28x = 1,611,264,757.82
  5. Step 5: Solve for x
    x = 1,611,264,757.82/18,612.28
  6. Step 6: Final answer
    x = 86,569.98

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.