Home / 40,143.93-55,286.26-39,272.20

Finding the Fourth Proportional to 40,143.93, 55,286.26 and 39,272.20

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Solution

The fourth proportional to 40,143.93, 55,286.26 and 39,272.20 is: 54,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,143.93 : 55,286.26 = 39,272.20 : x
  2. Step 2: Convert to fraction form
    40,143.93/55,286.26 = 39,272.20/x
  3. Step 3: Cross multiply
    40,143.93x = 55,286.26 × 39,272.20
  4. Step 4: Simplify right side
    40,143.93x = 2,171,213,059.97
  5. Step 5: Solve for x
    x = 2,171,213,059.97/40,143.93
  6. Step 6: Final answer
    x = 54,085.71

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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.