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Finding the Fourth Proportional to 79,996.26, 119,994.39 and 20,831.76

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Solution

The fourth proportional to 79,996.26, 119,994.39 and 20,831.76 is: 31,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,996.26 : 119,994.39 = 20,831.76 : x
  2. Step 2: Convert to fraction form
    79,996.26/119,994.39 = 20,831.76/x
  3. Step 3: Cross multiply
    79,996.26x = 119,994.39 × 20,831.76
  4. Step 4: Simplify right side
    79,996.26x = 2,499,694,333.83
  5. Step 5: Solve for x
    x = 2,499,694,333.83/79,996.26
  6. Step 6: Final answer
    x = 31,247.64

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1.5x scale

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.