Home / 40,198.36-55,480.32-38,426.68

Finding the Fourth Proportional to 40,198.36, 55,480.32 and 38,426.68

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Solution

The fourth proportional to 40,198.36, 55,480.32 and 38,426.68 is: 53,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,198.36 : 55,480.32 = 38,426.68 : x
  2. Step 2: Convert to fraction form
    40,198.36/55,480.32 = 38,426.68/x
  3. Step 3: Cross multiply
    40,198.36x = 55,480.32 × 38,426.68
  4. Step 4: Simplify right side
    40,198.36x = 2,131,924,502.94
  5. Step 5: Solve for x
    x = 2,131,924,502.94/40,198.36
  6. Step 6: Final answer
    x = 53,035.11

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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.