Home / 81,844.10-122,766.15-72,002.60

Finding the Fourth Proportional to 81,844.10, 122,766.15 and 72,002.60

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Solution

The fourth proportional to 81,844.10, 122,766.15 and 72,002.60 is: 108,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,844.10 : 122,766.15 = 72,002.60 : x
  2. Step 2: Convert to fraction form
    81,844.10/122,766.15 = 72,002.60/x
  3. Step 3: Cross multiply
    81,844.10x = 122,766.15 × 72,002.60
  4. Step 4: Simplify right side
    81,844.10x = 8,839,481,991.99
  5. Step 5: Solve for x
    x = 8,839,481,991.99/81,844.10
  6. Step 6: Final answer
    x = 108,003.90

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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.