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Finding the Fourth Proportional to 79,991.21, 120,006.56 and 23,831.11

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Solution

The fourth proportional to 79,991.21, 120,006.56 and 23,831.11 is: 35,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,991.21 : 120,006.56 = 23,831.11 : x
  2. Step 2: Convert to fraction form
    79,991.21/120,006.56 = 23,831.11/x
  3. Step 3: Cross multiply
    79,991.21x = 120,006.56 × 23,831.11
  4. Step 4: Simplify right side
    79,991.21x = 2,859,889,291.64
  5. Step 5: Solve for x
    x = 2,859,889,291.64/79,991.21
  6. Step 6: Final answer
    x = 35,752.54

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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.