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Finding the Fourth Proportional to 35,480.38, 48,965.43 and 20,375.50

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Solution

The fourth proportional to 35,480.38, 48,965.43 and 20,375.50 is: 28,119.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,480.38 : 48,965.43 = 20,375.50 : x
  2. Step 2: Convert to fraction form
    35,480.38/48,965.43 = 20,375.50/x
  3. Step 3: Cross multiply
    35,480.38x = 48,965.43 × 20,375.50
  4. Step 4: Simplify right side
    35,480.38x = 997,695,118.97
  5. Step 5: Solve for x
    x = 997,695,118.97/35,480.38
  6. Step 6: Final answer
    x = 28,119.63

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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.