Home / 66,781.08-100,171.62-38,744.28

Finding the Fourth Proportional to 66,781.08, 100,171.62 and 38,744.28

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Solution

The fourth proportional to 66,781.08, 100,171.62 and 38,744.28 is: 58,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,781.08 : 100,171.62 = 38,744.28 : x
  2. Step 2: Convert to fraction form
    66,781.08/100,171.62 = 38,744.28/x
  3. Step 3: Cross multiply
    66,781.08x = 100,171.62 × 38,744.28
  4. Step 4: Simplify right side
    66,781.08x = 3,881,077,293.33
  5. Step 5: Solve for x
    x = 3,881,077,293.33/66,781.08
  6. Step 6: Final answer
    x = 58,116.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.