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Finding the Fourth Proportional to 45,911.15, 68,867.03 and 12,634.73

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Solution

The fourth proportional to 45,911.15, 68,867.03 and 12,634.73 is: 18,952.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,911.15 : 68,867.03 = 12,634.73 : x
  2. Step 2: Convert to fraction form
    45,911.15/68,867.03 = 12,634.73/x
  3. Step 3: Cross multiply
    45,911.15x = 68,867.03 × 12,634.73
  4. Step 4: Simplify right side
    45,911.15x = 870,116,329.95
  5. Step 5: Solve for x
    x = 870,116,329.95/45,911.15
  6. Step 6: Final answer
    x = 18,952.18

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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.