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Finding the Fourth Proportional to 54,936.60, 82,400.10 and 18,000.60

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Solution

The fourth proportional to 54,936.60, 82,400.10 and 18,000.60 is: 26,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,936.60 : 82,400.10 = 18,000.60 : x
  2. Step 2: Convert to fraction form
    54,936.60/82,400.10 = 18,000.60/x
  3. Step 3: Cross multiply
    54,936.60x = 82,400.10 × 18,000.60
  4. Step 4: Simplify right side
    54,936.60x = 1,483,251,240.06
  5. Step 5: Solve for x
    x = 1,483,251,240.06/54,936.60
  6. Step 6: Final answer
    x = 26,999.33

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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.