Home / 79,831.26-119,507.78-76,992.36

Finding the Fourth Proportional to 79,831.26, 119,507.78 and 76,992.36

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Solution

The fourth proportional to 79,831.26, 119,507.78 and 76,992.36 is: 115,257.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,831.26 : 119,507.78 = 76,992.36 : x
  2. Step 2: Convert to fraction form
    79,831.26/119,507.78 = 76,992.36/x
  3. Step 3: Cross multiply
    79,831.26x = 119,507.78 × 76,992.36
  4. Step 4: Simplify right side
    79,831.26x = 9,201,186,020.56
  5. Step 5: Solve for x
    x = 9,201,186,020.56/79,831.26
  6. Step 6: Final answer
    x = 115,257.93

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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.