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Finding the Fourth Proportional to 69,129.24, 103,758.86 and 35,872.86

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Solution

The fourth proportional to 69,129.24, 103,758.86 and 35,872.86 is: 53,843.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,129.24 : 103,758.86 = 35,872.86 : x
  2. Step 2: Convert to fraction form
    69,129.24/103,758.86 = 35,872.86/x
  3. Step 3: Cross multiply
    69,129.24x = 103,758.86 × 35,872.86
  4. Step 4: Simplify right side
    69,129.24x = 3,722,127,058.54
  5. Step 5: Solve for x
    x = 3,722,127,058.54/69,129.24
  6. Step 6: Final answer
    x = 53,843.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.