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Finding the Fourth Proportional to 69,128.52, 103,671.14 and 22,371.72

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Solution

The fourth proportional to 69,128.52, 103,671.14 and 22,371.72 is: 33,550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,128.52 : 103,671.14 = 22,371.72 : x
  2. Step 2: Convert to fraction form
    69,128.52/103,671.14 = 22,371.72/x
  3. Step 3: Cross multiply
    69,128.52x = 103,671.14 × 22,371.72
  4. Step 4: Simplify right side
    69,128.52x = 2,319,301,716.16
  5. Step 5: Solve for x
    x = 2,319,301,716.16/69,128.52
  6. Step 6: Final answer
    x = 33,550.58

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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.