Home / 52,879.37-79,317.23-21,279.65

Finding the Fourth Proportional to 52,879.37, 79,317.23 and 21,279.65

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Solution

The fourth proportional to 52,879.37, 79,317.23 and 21,279.65 is: 31,918.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,879.37 : 79,317.23 = 21,279.65 : x
  2. Step 2: Convert to fraction form
    52,879.37/79,317.23 = 21,279.65/x
  3. Step 3: Cross multiply
    52,879.37x = 79,317.23 × 21,279.65
  4. Step 4: Simplify right side
    52,879.37x = 1,687,842,390.39
  5. Step 5: Solve for x
    x = 1,687,842,390.39/52,879.37
  6. Step 6: Final answer
    x = 31,918.73

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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.