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Finding the Fourth Proportional to 35,279.44, 48,690.12 and 20,375.44

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Solution

The fourth proportional to 35,279.44, 48,690.12 and 20,375.44 is: 28,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,279.44 : 48,690.12 = 20,375.44 : x
  2. Step 2: Convert to fraction form
    35,279.44/48,690.12 = 20,375.44/x
  3. Step 3: Cross multiply
    35,279.44x = 48,690.12 × 20,375.44
  4. Step 4: Simplify right side
    35,279.44x = 992,082,618.65
  5. Step 5: Solve for x
    x = 992,082,618.65/35,279.44
  6. Step 6: Final answer
    x = 28,120.70

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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.