Home / 80,619.14-120,928.54-21,454.82

Finding the Fourth Proportional to 80,619.14, 120,928.54 and 21,454.82

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Solution

The fourth proportional to 80,619.14, 120,928.54 and 21,454.82 is: 32,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,619.14 : 120,928.54 = 21,454.82 : x
  2. Step 2: Convert to fraction form
    80,619.14/120,928.54 = 21,454.82/x
  3. Step 3: Cross multiply
    80,619.14x = 120,928.54 × 21,454.82
  4. Step 4: Simplify right side
    80,619.14x = 2,594,500,058.56
  5. Step 5: Solve for x
    x = 2,594,500,058.56/80,619.14
  6. Step 6: Final answer
    x = 32,182.18

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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.