Home / 53,081.88-79,635.12-18,021.54

Finding the Fourth Proportional to 53,081.88, 79,635.12 and 18,021.54

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Solution

The fourth proportional to 53,081.88, 79,635.12 and 18,021.54 is: 27,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,081.88 : 79,635.12 = 18,021.54 : x
  2. Step 2: Convert to fraction form
    53,081.88/79,635.12 = 18,021.54/x
  3. Step 3: Cross multiply
    53,081.88x = 79,635.12 × 18,021.54
  4. Step 4: Simplify right side
    53,081.88x = 1,435,147,012.20
  5. Step 5: Solve for x
    x = 1,435,147,012.20/53,081.88
  6. Step 6: Final answer
    x = 27,036.48

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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.