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Finding the Fourth Proportional to 50,764.32, 70,003.44 and 39,129.48

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Solution

The fourth proportional to 50,764.32, 70,003.44 and 39,129.48 is: 53,959.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,764.32 : 70,003.44 = 39,129.48 : x
  2. Step 2: Convert to fraction form
    50,764.32/70,003.44 = 39,129.48/x
  3. Step 3: Cross multiply
    50,764.32x = 70,003.44 × 39,129.48
  4. Step 4: Simplify right side
    50,764.32x = 2,739,198,205.41
  5. Step 5: Solve for x
    x = 2,739,198,205.41/50,764.32
  6. Step 6: Final answer
    x = 53,959.12

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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.