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Finding the Fourth Proportional to 35,310.75, 48,733.16 and 20,406.75

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Solution

The fourth proportional to 35,310.75, 48,733.16 and 20,406.75 is: 28,163.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,310.75 : 48,733.16 = 20,406.75 : x
  2. Step 2: Convert to fraction form
    35,310.75/48,733.16 = 20,406.75/x
  3. Step 3: Cross multiply
    35,310.75x = 48,733.16 × 20,406.75
  4. Step 4: Simplify right side
    35,310.75x = 994,485,310.80
  5. Step 5: Solve for x
    x = 994,485,310.80/35,310.75
  6. Step 6: Final answer
    x = 28,163.81

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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.