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Finding the Fourth Proportional to 80,643.99, 120,949.74 and 50,644.83

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Solution

The fourth proportional to 80,643.99, 120,949.74 and 50,644.83 is: 75,957.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643.99 : 120,949.74 = 50,644.83 : x
  2. Step 2: Convert to fraction form
    80,643.99/120,949.74 = 50,644.83/x
  3. Step 3: Cross multiply
    80,643.99x = 120,949.74 × 50,644.83
  4. Step 4: Simplify right side
    80,643.99x = 6,125,479,020.84
  5. Step 5: Solve for x
    x = 6,125,479,020.84/80,643.99
  6. Step 6: Final answer
    x = 75,957.04

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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.