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Finding the Fourth Proportional to 50,761.03, 70,049.19 and 28,100

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Solution

The fourth proportional to 50,761.03, 70,049.19 and 28,100 is: 38,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,761.03 : 70,049.19 = 28,100 : x
  2. Step 2: Convert to fraction form
    50,761.03/70,049.19 = 28,100/x
  3. Step 3: Cross multiply
    50,761.03x = 70,049.19 × 28,100
  4. Step 4: Simplify right side
    50,761.03x = 1,968,382,239
  5. Step 5: Solve for x
    x = 1,968,382,239/50,761.03
  6. Step 6: Final answer
    x = 38,777.43

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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.