Home / 76,913.80-115,422.30-26,993.80

Finding the Fourth Proportional to 76,913.80, 115,422.30 and 26,993.80

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Solution

The fourth proportional to 76,913.80, 115,422.30 and 26,993.80 is: 40,508.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,913.80 : 115,422.30 = 26,993.80 : x
  2. Step 2: Convert to fraction form
    76,913.80/115,422.30 = 26,993.80/x
  3. Step 3: Cross multiply
    76,913.80x = 115,422.30 × 26,993.80
  4. Step 4: Simplify right side
    76,913.80x = 3,115,686,481.74
  5. Step 5: Solve for x
    x = 3,115,686,481.74/76,913.80
  6. Step 6: Final answer
    x = 40,508.81

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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.