Home / 57,082.05-78,769.60-31,235.36

Finding the Fourth Proportional to 57,082.05, 78,769.60 and 31,235.36

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Solution

The fourth proportional to 57,082.05, 78,769.60 and 31,235.36 is: 43,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,082.05 : 78,769.60 = 31,235.36 : x
  2. Step 2: Convert to fraction form
    57,082.05/78,769.60 = 31,235.36/x
  3. Step 3: Cross multiply
    57,082.05x = 78,769.60 × 31,235.36
  4. Step 4: Simplify right side
    57,082.05x = 2,460,396,341.12
  5. Step 5: Solve for x
    x = 2,460,396,341.12/57,082.05
  6. Step 6: Final answer
    x = 43,102.80

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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.