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Finding the Fourth Proportional to 32,891.20, 49,336.80 and 18,845.80

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Solution

The fourth proportional to 32,891.20, 49,336.80 and 18,845.80 is: 28,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,891.20 : 49,336.80 = 18,845.80 : x
  2. Step 2: Convert to fraction form
    32,891.20/49,336.80 = 18,845.80/x
  3. Step 3: Cross multiply
    32,891.20x = 49,336.80 × 18,845.80
  4. Step 4: Simplify right side
    32,891.20x = 929,791,465.44
  5. Step 5: Solve for x
    x = 929,791,465.44/32,891.20
  6. Step 6: Final answer
    x = 28,268.70

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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.