Home / 57,221.36-78,964.66-31,727.78

Finding the Fourth Proportional to 57,221.36, 78,964.66 and 31,727.78

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Solution

The fourth proportional to 57,221.36, 78,964.66 and 31,727.78 is: 43,783.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,221.36 : 78,964.66 = 31,727.78 : x
  2. Step 2: Convert to fraction form
    57,221.36/78,964.66 = 31,727.78/x
  3. Step 3: Cross multiply
    57,221.36x = 78,964.66 × 31,727.78
  4. Step 4: Simplify right side
    57,221.36x = 2,505,372,886.11
  5. Step 5: Solve for x
    x = 2,505,372,886.11/57,221.36
  6. Step 6: Final answer
    x = 43,783.87

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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.