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Finding the Third Proportional to 30,672.19 and 66,177.38

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Solution

The third proportional to 30,672.19 and 66,177.38 is: 142,782.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.19 : 66,177.38 = 66,177.38 : x
  2. Step 2: Convert to fraction form
    30,672.19/66,177.38 = 66,177.38/x
  3. Step 3: Cross multiply
    30,672.19x = 66,177.38 × 66,177.38
  4. Step 4: Simplify right side
    30,672.19x = 4,379,444,961.89
  5. Step 5: Solve for x
    x = 4,379,444,961.89/30,672.19
  6. Step 6: Final answer
    x = 142,782.28

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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.