Home / 80,132.31-120,257.52-38,012.51

Finding the Fourth Proportional to 80,132.31, 120,257.52 and 38,012.51

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Solution

The fourth proportional to 80,132.31, 120,257.52 and 38,012.51 is: 57,046.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,132.31 : 120,257.52 = 38,012.51 : x
  2. Step 2: Convert to fraction form
    80,132.31/120,257.52 = 38,012.51/x
  3. Step 3: Cross multiply
    80,132.31x = 120,257.52 × 38,012.51
  4. Step 4: Simplify right side
    80,132.31x = 4,571,289,390.23
  5. Step 5: Solve for x
    x = 4,571,289,390.23/80,132.31
  6. Step 6: Final answer
    x = 57,046.77

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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.