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Finding the Fourth Proportional to 35,305, 48,725.22 and 20,401

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Solution

The fourth proportional to 35,305, 48,725.22 and 20,401 is: 28,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,305 : 48,725.22 = 20,401 : x
  2. Step 2: Convert to fraction form
    35,305/48,725.22 = 20,401/x
  3. Step 3: Cross multiply
    35,305x = 48,725.22 × 20,401
  4. Step 4: Simplify right side
    35,305x = 994,043,213.22
  5. Step 5: Solve for x
    x = 994,043,213.22/35,305
  6. Step 6: Final answer
    x = 28,155.88

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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.