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Finding the Fourth Proportional to 50,326.20, 75,489.30 and 20,728.80

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Solution

The fourth proportional to 50,326.20, 75,489.30 and 20,728.80 is: 31,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,326.20 : 75,489.30 = 20,728.80 : x
  2. Step 2: Convert to fraction form
    50,326.20/75,489.30 = 20,728.80/x
  3. Step 3: Cross multiply
    50,326.20x = 75,489.30 × 20,728.80
  4. Step 4: Simplify right side
    50,326.20x = 1,564,802,601.84
  5. Step 5: Solve for x
    x = 1,564,802,601.84/50,326.20
  6. Step 6: Final answer
    x = 31,093.20

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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.