Home / 81,496.88-122,215.26-28,175.36

Finding the Fourth Proportional to 81,496.88, 122,215.26 and 28,175.36

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Solution

The fourth proportional to 81,496.88, 122,215.26 and 28,175.36 is: 42,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,496.88 : 122,215.26 = 28,175.36 : x
  2. Step 2: Convert to fraction form
    81,496.88/122,215.26 = 28,175.36/x
  3. Step 3: Cross multiply
    81,496.88x = 122,215.26 × 28,175.36
  4. Step 4: Simplify right side
    81,496.88x = 3,443,458,947.99
  5. Step 5: Solve for x
    x = 3,443,458,947.99/81,496.88
  6. Step 6: Final answer
    x = 42,252.65

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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.