Home / 55,145.97-76,114.96-31,286.61

Finding the Fourth Proportional to 55,145.97, 76,114.96 and 31,286.61

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Solution

The fourth proportional to 55,145.97, 76,114.96 and 31,286.61 is: 43,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,145.97 : 76,114.96 = 31,286.61 : x
  2. Step 2: Convert to fraction form
    55,145.97/76,114.96 = 31,286.61/x
  3. Step 3: Cross multiply
    55,145.97x = 76,114.96 × 31,286.61
  4. Step 4: Simplify right side
    55,145.97x = 2,381,378,990.47
  5. Step 5: Solve for x
    x = 2,381,378,990.47/55,145.97
  6. Step 6: Final answer
    x = 43,183.19

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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.