Home / 84,578.44-126,869.71-28,419.36

Finding the Fourth Proportional to 84,578.44, 126,869.71 and 28,419.36

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Solution

The fourth proportional to 84,578.44, 126,869.71 and 28,419.36 is: 42,629.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,578.44 : 126,869.71 = 28,419.36 : x
  2. Step 2: Convert to fraction form
    84,578.44/126,869.71 = 28,419.36/x
  3. Step 3: Cross multiply
    84,578.44x = 126,869.71 × 28,419.36
  4. Step 4: Simplify right side
    84,578.44x = 3,605,555,961.59
  5. Step 5: Solve for x
    x = 3,605,555,961.59/84,578.44
  6. Step 6: Final answer
    x = 42,629.73

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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.