Home / 55,128.45-82,734.28-40,375.61

Finding the Fourth Proportional to 55,128.45, 82,734.28 and 40,375.61

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Solution

The fourth proportional to 55,128.45, 82,734.28 and 40,375.61 is: 60,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.45 : 82,734.28 = 40,375.61 : x
  2. Step 2: Convert to fraction form
    55,128.45/82,734.28 = 40,375.61/x
  3. Step 3: Cross multiply
    55,128.45x = 82,734.28 × 40,375.61
  4. Step 4: Simplify right side
    55,128.45x = 3,340,447,128.81
  5. Step 5: Solve for x
    x = 3,340,447,128.81/55,128.45
  6. Step 6: Final answer
    x = 60,593.89

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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.