Home / 39,939.12-54,716.52-38,443.68

Finding the Fourth Proportional to 39,939.12, 54,716.52 and 38,443.68

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Solution

The fourth proportional to 39,939.12, 54,716.52 and 38,443.68 is: 52,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,939.12 : 54,716.52 = 38,443.68 : x
  2. Step 2: Convert to fraction form
    39,939.12/54,716.52 = 38,443.68/x
  3. Step 3: Cross multiply
    39,939.12x = 54,716.52 × 38,443.68
  4. Step 4: Simplify right side
    39,939.12x = 2,103,504,385.59
  5. Step 5: Solve for x
    x = 2,103,504,385.59/39,939.12
  6. Step 6: Final answer
    x = 52,667.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.