Home / 81,082.62-121,616.51-57,491.37

Finding the Fourth Proportional to 81,082.62, 121,616.51 and 57,491.37

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Solution

The fourth proportional to 81,082.62, 121,616.51 and 57,491.37 is: 86,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082.62 : 121,616.51 = 57,491.37 : x
  2. Step 2: Convert to fraction form
    81,082.62/121,616.51 = 57,491.37/x
  3. Step 3: Cross multiply
    81,082.62x = 121,616.51 × 57,491.37
  4. Step 4: Simplify right side
    81,082.62x = 6,991,899,487.06
  5. Step 5: Solve for x
    x = 6,991,899,487.06/81,082.62
  6. Step 6: Final answer
    x = 86,231.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.