Home / 68,537.75-102,809.30-21,148.61

Finding the Fourth Proportional to 68,537.75, 102,809.30 and 21,148.61

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Solution

The fourth proportional to 68,537.75, 102,809.30 and 21,148.61 is: 31,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,537.75 : 102,809.30 = 21,148.61 : x
  2. Step 2: Convert to fraction form
    68,537.75/102,809.30 = 21,148.61/x
  3. Step 3: Cross multiply
    68,537.75x = 102,809.30 × 21,148.61
  4. Step 4: Simplify right side
    68,537.75x = 2,174,273,867.55
  5. Step 5: Solve for x
    x = 2,174,273,867.55/68,537.75
  6. Step 6: Final answer
    x = 31,723.74

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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.