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Finding the Fourth Proportional to 80,857.42, 111,583.21 and 45,049.72

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Solution

The fourth proportional to 80,857.42, 111,583.21 and 45,049.72 is: 62,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,857.42 : 111,583.21 = 45,049.72 : x
  2. Step 2: Convert to fraction form
    80,857.42/111,583.21 = 45,049.72/x
  3. Step 3: Cross multiply
    80,857.42x = 111,583.21 × 45,049.72
  4. Step 4: Simplify right side
    80,857.42x = 5,026,792,367.20
  5. Step 5: Solve for x
    x = 5,026,792,367.20/80,857.42
  6. Step 6: Final answer
    x = 62,168.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.