Home / 81,255.62-112,134.57-57,424.34

Finding the Fourth Proportional to 81,255.62, 112,134.57 and 57,424.34

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Solution

The fourth proportional to 81,255.62, 112,134.57 and 57,424.34 is: 79,246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255.62 : 112,134.57 = 57,424.34 : x
  2. Step 2: Convert to fraction form
    81,255.62/112,134.57 = 57,424.34/x
  3. Step 3: Cross multiply
    81,255.62x = 112,134.57 × 57,424.34
  4. Step 4: Simplify right side
    81,255.62x = 6,439,253,673.43
  5. Step 5: Solve for x
    x = 6,439,253,673.43/81,255.62
  6. Step 6: Final answer
    x = 79,246.87

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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.