Home / 68,910.11-103,226.76-31,418.60

Finding the Fourth Proportional to 68,910.11, 103,226.76 and 31,418.60

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Solution

The fourth proportional to 68,910.11, 103,226.76 and 31,418.60 is: 47,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,910.11 : 103,226.76 = 31,418.60 : x
  2. Step 2: Convert to fraction form
    68,910.11/103,226.76 = 31,418.60/x
  3. Step 3: Cross multiply
    68,910.11x = 103,226.76 × 31,418.60
  4. Step 4: Simplify right side
    68,910.11x = 3,243,240,124.64
  5. Step 5: Solve for x
    x = 3,243,240,124.64/68,910.11
  6. Step 6: Final answer
    x = 47,064.80

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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.