Home / 39,389.97-54,378.23-30,417.33

Finding the Fourth Proportional to 39,389.97, 54,378.23 and 30,417.33

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Solution

The fourth proportional to 39,389.97, 54,378.23 and 30,417.33 is: 41,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,389.97 : 54,378.23 = 30,417.33 : x
  2. Step 2: Convert to fraction form
    39,389.97/54,378.23 = 30,417.33/x
  3. Step 3: Cross multiply
    39,389.97x = 54,378.23 × 30,417.33
  4. Step 4: Simplify right side
    39,389.97x = 1,654,040,414.64
  5. Step 5: Solve for x
    x = 1,654,040,414.64/39,389.97
  6. Step 6: Final answer
    x = 41,991.41

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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.