Home / 80,583.99-120,879.02-30,654.78

Finding the Fourth Proportional to 80,583.99, 120,879.02 and 30,654.78

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Solution

The fourth proportional to 80,583.99, 120,879.02 and 30,654.78 is: 45,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,583.99 : 120,879.02 = 30,654.78 : x
  2. Step 2: Convert to fraction form
    80,583.99/120,879.02 = 30,654.78/x
  3. Step 3: Cross multiply
    80,583.99x = 120,879.02 × 30,654.78
  4. Step 4: Simplify right side
    80,583.99x = 3,705,519,764.72
  5. Step 5: Solve for x
    x = 3,705,519,764.72/80,583.99
  6. Step 6: Final answer
    x = 45,983.32

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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.