Home / 68,810.82-103,215.69-18,890.73

Finding the Fourth Proportional to 68,810.82, 103,215.69 and 18,890.73

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Solution

The fourth proportional to 68,810.82, 103,215.69 and 18,890.73 is: 28,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,810.82 : 103,215.69 = 18,890.73 : x
  2. Step 2: Convert to fraction form
    68,810.82/103,215.69 = 18,890.73/x
  3. Step 3: Cross multiply
    68,810.82x = 103,215.69 × 18,890.73
  4. Step 4: Simplify right side
    68,810.82x = 1,949,819,731.55
  5. Step 5: Solve for x
    x = 1,949,819,731.55/68,810.82
  6. Step 6: Final answer
    x = 28,335.95

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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.