Home / 57,213.72-78,948.60-31,719.42

Finding the Fourth Proportional to 57,213.72, 78,948.60 and 31,719.42

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Solution

The fourth proportional to 57,213.72, 78,948.60 and 31,719.42 is: 43,769.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,213.72 : 78,948.60 = 31,719.42 : x
  2. Step 2: Convert to fraction form
    57,213.72/78,948.60 = 31,719.42/x
  3. Step 3: Cross multiply
    57,213.72x = 78,948.60 × 31,719.42
  4. Step 4: Simplify right side
    57,213.72x = 2,504,203,801.81
  5. Step 5: Solve for x
    x = 2,504,203,801.81/57,213.72
  6. Step 6: Final answer
    x = 43,769.29

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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.