Home / 66,003.14-91,047.57-39,119.78

Finding the Fourth Proportional to 66,003.14, 91,047.57 and 39,119.78

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Solution

The fourth proportional to 66,003.14, 91,047.57 and 39,119.78 is: 53,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,003.14 : 91,047.57 = 39,119.78 : x
  2. Step 2: Convert to fraction form
    66,003.14/91,047.57 = 39,119.78/x
  3. Step 3: Cross multiply
    66,003.14x = 91,047.57 × 39,119.78
  4. Step 4: Simplify right side
    66,003.14x = 3,561,760,907.93
  5. Step 5: Solve for x
    x = 3,561,760,907.93/66,003.14
  6. Step 6: Final answer
    x = 53,963.51

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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.