Home / 57,213.20-78,958.86-31,727.54

Finding the Fourth Proportional to 57,213.20, 78,958.86 and 31,727.54

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Solution

The fourth proportional to 57,213.20, 78,958.86 and 31,727.54 is: 43,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,213.20 : 78,958.86 = 31,727.54 : x
  2. Step 2: Convert to fraction form
    57,213.20/78,958.86 = 31,727.54/x
  3. Step 3: Cross multiply
    57,213.20x = 78,958.86 × 31,727.54
  4. Step 4: Simplify right side
    57,213.20x = 2,505,170,389.00
  5. Step 5: Solve for x
    x = 2,505,170,389.00/57,213.20
  6. Step 6: Final answer
    x = 43,786.58

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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.