Home / 66,022.44-91,122.62-39,179.75

Finding the Fourth Proportional to 66,022.44, 91,122.62 and 39,179.75

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Solution

The fourth proportional to 66,022.44, 91,122.62 and 39,179.75 is: 54,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,022.44 : 91,122.62 = 39,179.75 : x
  2. Step 2: Convert to fraction form
    66,022.44/91,122.62 = 39,179.75/x
  3. Step 3: Cross multiply
    66,022.44x = 91,122.62 × 39,179.75
  4. Step 4: Simplify right side
    66,022.44x = 3,570,161,470.95
  5. Step 5: Solve for x
    x = 3,570,161,470.95/66,022.44
  6. Step 6: Final answer
    x = 54,074.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.