Home / 81,582.39-122,299.77-28,979.57

Finding the Fourth Proportional to 81,582.39, 122,299.77 and 28,979.57

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Solution

The fourth proportional to 81,582.39, 122,299.77 and 28,979.57 is: 43,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.39 : 122,299.77 = 28,979.57 : x
  2. Step 2: Convert to fraction form
    81,582.39/122,299.77 = 28,979.57/x
  3. Step 3: Cross multiply
    81,582.39x = 122,299.77 × 28,979.57
  4. Step 4: Simplify right side
    81,582.39x = 3,544,195,160.12
  5. Step 5: Solve for x
    x = 3,544,195,160.12/81,582.39
  6. Step 6: Final answer
    x = 43,443.14

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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.