Home / 75,639.39-113,306.19-38,147.32

Finding the Fourth Proportional to 75,639.39, 113,306.19 and 38,147.32

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Solution

The fourth proportional to 75,639.39, 113,306.19 and 38,147.32 is: 57,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,639.39 : 113,306.19 = 38,147.32 : x
  2. Step 2: Convert to fraction form
    75,639.39/113,306.19 = 38,147.32/x
  3. Step 3: Cross multiply
    75,639.39x = 113,306.19 × 38,147.32
  4. Step 4: Simplify right side
    75,639.39x = 4,322,327,487.91
  5. Step 5: Solve for x
    x = 4,322,327,487.91/75,639.39
  6. Step 6: Final answer
    x = 57,143.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.