Home / 57,180.36-78,924.78-40,188.36

Finding the Fourth Proportional to 57,180.36, 78,924.78 and 40,188.36

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Solution

The fourth proportional to 57,180.36, 78,924.78 and 40,188.36 is: 55,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,180.36 : 78,924.78 = 40,188.36 : x
  2. Step 2: Convert to fraction form
    57,180.36/78,924.78 = 40,188.36/x
  3. Step 3: Cross multiply
    57,180.36x = 78,924.78 × 40,188.36
  4. Step 4: Simplify right side
    57,180.36x = 3,171,857,471.56
  5. Step 5: Solve for x
    x = 3,171,857,471.56/57,180.36
  6. Step 6: Final answer
    x = 55,471.10

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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.