Home / 54,449.78-81,636.05-21,141.77

Finding the Fourth Proportional to 54,449.78, 81,636.05 and 21,141.77

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Solution

The fourth proportional to 54,449.78, 81,636.05 and 21,141.77 is: 31,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,449.78 : 81,636.05 = 21,141.77 : x
  2. Step 2: Convert to fraction form
    54,449.78/81,636.05 = 21,141.77/x
  3. Step 3: Cross multiply
    54,449.78x = 81,636.05 × 21,141.77
  4. Step 4: Simplify right side
    54,449.78x = 1,725,930,078.92
  5. Step 5: Solve for x
    x = 1,725,930,078.92/54,449.78
  6. Step 6: Final answer
    x = 31,697.65

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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.