Home / 68,961.18-103,412.61-21,563.55

Finding the Fourth Proportional to 68,961.18, 103,412.61 and 21,563.55

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Solution

The fourth proportional to 68,961.18, 103,412.61 and 21,563.55 is: 32,336.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,961.18 : 103,412.61 = 21,563.55 : x
  2. Step 2: Convert to fraction form
    68,961.18/103,412.61 = 21,563.55/x
  3. Step 3: Cross multiply
    68,961.18x = 103,412.61 × 21,563.55
  4. Step 4: Simplify right side
    68,961.18x = 2,229,942,986.37
  5. Step 5: Solve for x
    x = 2,229,942,986.37/68,961.18
  6. Step 6: Final answer
    x = 32,336.21

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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.