Home / 81,519.39-122,297.49-28,928.88

Finding the Fourth Proportional to 81,519.39, 122,297.49 and 28,928.88

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Solution

The fourth proportional to 81,519.39, 122,297.49 and 28,928.88 is: 43,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,519.39 : 122,297.49 = 28,928.88 : x
  2. Step 2: Convert to fraction form
    81,519.39/122,297.49 = 28,928.88/x
  3. Step 3: Cross multiply
    81,519.39x = 122,297.49 × 28,928.88
  4. Step 4: Simplify right side
    81,519.39x = 3,537,929,412.51
  5. Step 5: Solve for x
    x = 3,537,929,412.51/81,519.39
  6. Step 6: Final answer
    x = 43,399.85

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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.