Home / 80,046.25-120,069.37-30,137.54

Finding the Fourth Proportional to 80,046.25, 120,069.37 and 30,137.54

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Solution

The fourth proportional to 80,046.25, 120,069.37 and 30,137.54 is: 45,206.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,046.25 : 120,069.37 = 30,137.54 : x
  2. Step 2: Convert to fraction form
    80,046.25/120,069.37 = 30,137.54/x
  3. Step 3: Cross multiply
    80,046.25x = 120,069.37 × 30,137.54
  4. Step 4: Simplify right side
    80,046.25x = 3,618,595,441.15
  5. Step 5: Solve for x
    x = 3,618,595,441.15/80,046.25
  6. Step 6: Final answer
    x = 45,206.31

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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.