Home / 57,040.97-78,634.19-39,107.57

Finding the Fourth Proportional to 57,040.97, 78,634.19 and 39,107.57

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Solution

The fourth proportional to 57,040.97, 78,634.19 and 39,107.57 is: 53,911.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,040.97 : 78,634.19 = 39,107.57 : x
  2. Step 2: Convert to fraction form
    57,040.97/78,634.19 = 39,107.57/x
  3. Step 3: Cross multiply
    57,040.97x = 78,634.19 × 39,107.57
  4. Step 4: Simplify right side
    57,040.97x = 3,075,191,794.42
  5. Step 5: Solve for x
    x = 3,075,191,794.42/57,040.97
  6. Step 6: Final answer
    x = 53,911.99

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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.