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Finding the Fourth Proportional to 34,479, 51,727.74 and 18,680.31

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Solution

The fourth proportional to 34,479, 51,727.74 and 18,680.31 is: 28,025.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,479 : 51,727.74 = 18,680.31 : x
  2. Step 2: Convert to fraction form
    34,479/51,727.74 = 18,680.31/x
  3. Step 3: Cross multiply
    34,479x = 51,727.74 × 18,680.31
  4. Step 4: Simplify right side
    34,479x = 966,290,218.80
  5. Step 5: Solve for x
    x = 966,290,218.80/34,479
  6. Step 6: Final answer
    x = 28,025.47

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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.