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Finding the Third Proportional to 66,426.75 and 143,351.44

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Solution

The third proportional to 66,426.75 and 143,351.44 is: 309,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.75 : 143,351.44 = 143,351.44 : x
  2. Step 2: Convert to fraction form
    66,426.75/143,351.44 = 143,351.44/x
  3. Step 3: Cross multiply
    66,426.75x = 143,351.44 × 143,351.44
  4. Step 4: Simplify right side
    66,426.75x = 20,549,634,633.32
  5. Step 5: Solve for x
    x = 20,549,634,633.32/66,426.75
  6. Step 6: Final answer
    x = 309,357.82

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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.