Home / 40,479.54-55,905.32-30,816.34

Finding the Fourth Proportional to 40,479.54, 55,905.32 and 30,816.34

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Solution

The fourth proportional to 40,479.54, 55,905.32 and 30,816.34 is: 42,559.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.54 : 55,905.32 = 30,816.34 : x
  2. Step 2: Convert to fraction form
    40,479.54/55,905.32 = 30,816.34/x
  3. Step 3: Cross multiply
    40,479.54x = 55,905.32 × 30,816.34
  4. Step 4: Simplify right side
    40,479.54x = 1,722,797,348.93
  5. Step 5: Solve for x
    x = 1,722,797,348.93/40,479.54
  6. Step 6: Final answer
    x = 42,559.71

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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.