Home / 40,081.05-55,330.20-28,604.70

Finding the Fourth Proportional to 40,081.05, 55,330.20 and 28,604.70

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Solution

The fourth proportional to 40,081.05, 55,330.20 and 28,604.70 is: 39,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,081.05 : 55,330.20 = 28,604.70 : x
  2. Step 2: Convert to fraction form
    40,081.05/55,330.20 = 28,604.70/x
  3. Step 3: Cross multiply
    40,081.05x = 55,330.20 × 28,604.70
  4. Step 4: Simplify right side
    40,081.05x = 1,582,703,771.94
  5. Step 5: Solve for x
    x = 1,582,703,771.94/40,081.05
  6. Step 6: Final answer
    x = 39,487.58

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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.