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Finding the Third Proportional to 18,270.56 and 39,316.64

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Solution

The third proportional to 18,270.56 and 39,316.64 is: 84,605.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.56 : 39,316.64 = 39,316.64 : x
  2. Step 2: Convert to fraction form
    18,270.56/39,316.64 = 39,316.64/x
  3. Step 3: Cross multiply
    18,270.56x = 39,316.64 × 39,316.64
  4. Step 4: Simplify right side
    18,270.56x = 1,545,798,230.04
  5. Step 5: Solve for x
    x = 1,545,798,230.04/18,270.56
  6. Step 6: Final answer
    x = 84,605.95

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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.