Home / 81,053.21-121,584.41-21,893.58

Finding the Fourth Proportional to 81,053.21, 121,584.41 and 21,893.58

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Solution

The fourth proportional to 81,053.21, 121,584.41 and 21,893.58 is: 32,841.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,053.21 : 121,584.41 = 21,893.58 : x
  2. Step 2: Convert to fraction form
    81,053.21/121,584.41 = 21,893.58/x
  3. Step 3: Cross multiply
    81,053.21x = 121,584.41 × 21,893.58
  4. Step 4: Simplify right side
    81,053.21x = 2,661,917,897.62
  5. Step 5: Solve for x
    x = 2,661,917,897.62/81,053.21
  6. Step 6: Final answer
    x = 32,841.61

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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.