Home / 66,085.67-91,198.36-39,233.57

Finding the Fourth Proportional to 66,085.67, 91,198.36 and 39,233.57

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Solution

The fourth proportional to 66,085.67, 91,198.36 and 39,233.57 is: 54,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.67 : 91,198.36 = 39,233.57 : x
  2. Step 2: Convert to fraction form
    66,085.67/91,198.36 = 39,233.57/x
  3. Step 3: Cross multiply
    66,085.67x = 91,198.36 × 39,233.57
  4. Step 4: Simplify right side
    66,085.67x = 3,578,036,613.31
  5. Step 5: Solve for x
    x = 3,578,036,613.31/66,085.67
  6. Step 6: Final answer
    x = 54,142.40

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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.