Home / 40,042.96-55,258.20-22,138.72

Finding the Fourth Proportional to 40,042.96, 55,258.20 and 22,138.72

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Solution

The fourth proportional to 40,042.96, 55,258.20 and 22,138.72 is: 30,550.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,042.96 : 55,258.20 = 22,138.72 : x
  2. Step 2: Convert to fraction form
    40,042.96/55,258.20 = 22,138.72/x
  3. Step 3: Cross multiply
    40,042.96x = 55,258.20 × 22,138.72
  4. Step 4: Simplify right side
    40,042.96x = 1,223,345,679.36
  5. Step 5: Solve for x
    x = 1,223,345,679.36/40,042.96
  6. Step 6: Final answer
    x = 30,550.83

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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.