Home / 66,120.59-91,236.42-39,253.29

Finding the Fourth Proportional to 66,120.59, 91,236.42 and 39,253.29

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Solution

The fourth proportional to 66,120.59, 91,236.42 and 39,253.29 is: 54,163.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.59 : 91,236.42 = 39,253.29 : x
  2. Step 2: Convert to fraction form
    66,120.59/91,236.42 = 39,253.29/x
  3. Step 3: Cross multiply
    66,120.59x = 91,236.42 × 39,253.29
  4. Step 4: Simplify right side
    66,120.59x = 3,581,329,652.82
  5. Step 5: Solve for x
    x = 3,581,329,652.82/66,120.59
  6. Step 6: Final answer
    x = 54,163.61

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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.