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Finding the Fourth Proportional to 55,233, 82,850.36 and 13,680

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Solution

The fourth proportional to 55,233, 82,850.36 and 13,680 is: 20,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,233 : 82,850.36 = 13,680 : x
  2. Step 2: Convert to fraction form
    55,233/82,850.36 = 13,680/x
  3. Step 3: Cross multiply
    55,233x = 82,850.36 × 13,680
  4. Step 4: Simplify right side
    55,233x = 1,133,392,856.40
  5. Step 5: Solve for x
    x = 1,133,392,856.40/55,233
  6. Step 6: Final answer
    x = 20,520.21

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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.