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Finding the Third Proportional to 30,815.44 and 66,232.69

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Solution

The third proportional to 30,815.44 and 66,232.69 is: 142,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.44 : 66,232.69 = 66,232.69 : x
  2. Step 2: Convert to fraction form
    30,815.44/66,232.69 = 66,232.69/x
  3. Step 3: Cross multiply
    30,815.44x = 66,232.69 × 66,232.69
  4. Step 4: Simplify right side
    30,815.44x = 4,386,768,893.47
  5. Step 5: Solve for x
    x = 4,386,768,893.47/30,815.44
  6. Step 6: Final answer
    x = 142,356.21

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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.