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Finding the Third Proportional to 30,800.25 and 66,516.19

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Solution

The third proportional to 30,800.25 and 66,516.19 is: 143,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.25 : 66,516.19 = 66,516.19 : x
  2. Step 2: Convert to fraction form
    30,800.25/66,516.19 = 66,516.19/x
  3. Step 3: Cross multiply
    30,800.25x = 66,516.19 × 66,516.19
  4. Step 4: Simplify right side
    30,800.25x = 4,424,403,199.54
  5. Step 5: Solve for x
    x = 4,424,403,199.54/30,800.25
  6. Step 6: Final answer
    x = 143,648.29

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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.