Home / 40,126.84-55,375.20-22,221.46

Finding the Fourth Proportional to 40,126.84, 55,375.20 and 22,221.46

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Solution

The fourth proportional to 40,126.84, 55,375.20 and 22,221.46 is: 30,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,126.84 : 55,375.20 = 22,221.46 : x
  2. Step 2: Convert to fraction form
    40,126.84/55,375.20 = 22,221.46/x
  3. Step 3: Cross multiply
    40,126.84x = 55,375.20 × 22,221.46
  4. Step 4: Simplify right side
    40,126.84x = 1,230,517,791.79
  5. Step 5: Solve for x
    x = 1,230,517,791.79/40,126.84
  6. Step 6: Final answer
    x = 30,665.70

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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.