Home / 80,631.77-120,949.77-21,467.54

Finding the Fourth Proportional to 80,631.77, 120,949.77 and 21,467.54

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Solution

The fourth proportional to 80,631.77, 120,949.77 and 21,467.54 is: 32,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,631.77 : 120,949.77 = 21,467.54 : x
  2. Step 2: Convert to fraction form
    80,631.77/120,949.77 = 21,467.54/x
  3. Step 3: Cross multiply
    80,631.77x = 120,949.77 × 21,467.54
  4. Step 4: Simplify right side
    80,631.77x = 2,596,493,420.72
  5. Step 5: Solve for x
    x = 2,596,493,420.72/80,631.77
  6. Step 6: Final answer
    x = 32,201.87

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1.5x scale

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.