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Finding the Fourth Proportional to 66,916.80, 100,287.60 and 33,674.40

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Solution

The fourth proportional to 66,916.80, 100,287.60 and 33,674.40 is: 50,467.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,916.80 : 100,287.60 = 33,674.40 : x
  2. Step 2: Convert to fraction form
    66,916.80/100,287.60 = 33,674.40/x
  3. Step 3: Cross multiply
    66,916.80x = 100,287.60 × 33,674.40
  4. Step 4: Simplify right side
    66,916.80x = 3,377,124,757.44
  5. Step 5: Solve for x
    x = 3,377,124,757.44/66,916.80
  6. Step 6: Final answer
    x = 50,467.52

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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.