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Finding the Fourth Proportional to 57,121.92, 85,680.32 and 15,568.88

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Solution

The fourth proportional to 57,121.92, 85,680.32 and 15,568.88 is: 23,352.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.92 : 85,680.32 = 15,568.88 : x
  2. Step 2: Convert to fraction form
    57,121.92/85,680.32 = 15,568.88/x
  3. Step 3: Cross multiply
    57,121.92x = 85,680.32 × 15,568.88
  4. Step 4: Simplify right side
    57,121.92x = 1,333,946,620.44
  5. Step 5: Solve for x
    x = 1,333,946,620.44/57,121.92
  6. Step 6: Final answer
    x = 23,352.62

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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.