Home / 68,517.77-102,794.38-21,131.81

Finding the Fourth Proportional to 68,517.77, 102,794.38 and 21,131.81

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Solution

The fourth proportional to 68,517.77, 102,794.38 and 21,131.81 is: 31,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,517.77 : 102,794.38 = 21,131.81 : x
  2. Step 2: Convert to fraction form
    68,517.77/102,794.38 = 21,131.81/x
  3. Step 3: Cross multiply
    68,517.77x = 102,794.38 × 21,131.81
  4. Step 4: Simplify right side
    68,517.77x = 2,172,231,307.23
  5. Step 5: Solve for x
    x = 2,172,231,307.23/68,517.77
  6. Step 6: Final answer
    x = 31,703.18

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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.