Home / 66,491.26-91,761.45-38,198.77

Finding the Fourth Proportional to 66,491.26, 91,761.45 and 38,198.77

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Solution

The fourth proportional to 66,491.26, 91,761.45 and 38,198.77 is: 52,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.26 : 91,761.45 = 38,198.77 : x
  2. Step 2: Convert to fraction form
    66,491.26/91,761.45 = 38,198.77/x
  3. Step 3: Cross multiply
    66,491.26x = 91,761.45 × 38,198.77
  4. Step 4: Simplify right side
    66,491.26x = 3,505,174,523.42
  5. Step 5: Solve for x
    x = 3,505,174,523.42/66,491.26
  6. Step 6: Final answer
    x = 52,716.32

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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.