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Finding the Fourth Proportional to 45,889.80, 68,821.44 and 12,610.95

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Solution

The fourth proportional to 45,889.80, 68,821.44 and 12,610.95 is: 18,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,889.80 : 68,821.44 = 12,610.95 : x
  2. Step 2: Convert to fraction form
    45,889.80/68,821.44 = 12,610.95/x
  3. Step 3: Cross multiply
    45,889.80x = 68,821.44 × 12,610.95
  4. Step 4: Simplify right side
    45,889.80x = 867,903,738.77
  5. Step 5: Solve for x
    x = 867,903,738.77/45,889.80
  6. Step 6: Final answer
    x = 18,912.78

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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.