Home / 66,198.96-91,344.40-39,331.56

Finding the Fourth Proportional to 66,198.96, 91,344.40 and 39,331.56

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Solution

The fourth proportional to 66,198.96, 91,344.40 and 39,331.56 is: 54,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,198.96 : 91,344.40 = 39,331.56 : x
  2. Step 2: Convert to fraction form
    66,198.96/91,344.40 = 39,331.56/x
  3. Step 3: Cross multiply
    66,198.96x = 91,344.40 × 39,331.56
  4. Step 4: Simplify right side
    66,198.96x = 3,592,717,749.26
  5. Step 5: Solve for x
    x = 3,592,717,749.26/66,198.96
  6. Step 6: Final answer
    x = 54,271.51

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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.