Home / 69,148.39-103,546.07-55,128.86

Finding the Fourth Proportional to 69,148.39, 103,546.07 and 55,128.86

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Solution

The fourth proportional to 69,148.39, 103,546.07 and 55,128.86 is: 82,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,148.39 : 103,546.07 = 55,128.86 : x
  2. Step 2: Convert to fraction form
    69,148.39/103,546.07 = 55,128.86/x
  3. Step 3: Cross multiply
    69,148.39x = 103,546.07 × 55,128.86
  4. Step 4: Simplify right side
    69,148.39x = 5,708,376,796.58
  5. Step 5: Solve for x
    x = 5,708,376,796.58/69,148.39
  6. Step 6: Final answer
    x = 82,552.56

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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.