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Finding the Fourth Proportional to 36,601.80, 54,905.40 and 13,225.20

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Solution

The fourth proportional to 36,601.80, 54,905.40 and 13,225.20 is: 19,838.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,601.80 : 54,905.40 = 13,225.20 : x
  2. Step 2: Convert to fraction form
    36,601.80/54,905.40 = 13,225.20/x
  3. Step 3: Cross multiply
    36,601.80x = 54,905.40 × 13,225.20
  4. Step 4: Simplify right side
    36,601.80x = 726,134,896.08
  5. Step 5: Solve for x
    x = 726,134,896.08/36,601.80
  6. Step 6: Final answer
    x = 19,838.78

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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.