Home / 76,879.13-115,338.13-21,475.13

Finding the Fourth Proportional to 76,879.13, 115,338.13 and 21,475.13

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Solution

The fourth proportional to 76,879.13, 115,338.13 and 21,475.13 is: 32,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,879.13 : 115,338.13 = 21,475.13 : x
  2. Step 2: Convert to fraction form
    76,879.13/115,338.13 = 21,475.13/x
  3. Step 3: Cross multiply
    76,879.13x = 115,338.13 × 21,475.13
  4. Step 4: Simplify right side
    76,879.13x = 2,476,900,705.33
  5. Step 5: Solve for x
    x = 2,476,900,705.33/76,879.13
  6. Step 6: Final answer
    x = 32,218.12

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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.