Home / 40,105.87-55,358.43-23,121.46

Finding the Fourth Proportional to 40,105.87, 55,358.43 and 23,121.46

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Solution

The fourth proportional to 40,105.87, 55,358.43 and 23,121.46 is: 31,914.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,105.87 : 55,358.43 = 23,121.46 : x
  2. Step 2: Convert to fraction form
    40,105.87/55,358.43 = 23,121.46/x
  3. Step 3: Cross multiply
    40,105.87x = 55,358.43 × 23,121.46
  4. Step 4: Simplify right side
    40,105.87x = 1,279,967,724.91
  5. Step 5: Solve for x
    x = 1,279,967,724.91/40,105.87
  6. Step 6: Final answer
    x = 31,914.72

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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.