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Finding the Fourth Proportional to 55,129.20, 82,704.60 and 23,539.20

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Solution

The fourth proportional to 55,129.20, 82,704.60 and 23,539.20 is: 35,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.20 : 82,704.60 = 23,539.20 : x
  2. Step 2: Convert to fraction form
    55,129.20/82,704.60 = 23,539.20/x
  3. Step 3: Cross multiply
    55,129.20x = 82,704.60 × 23,539.20
  4. Step 4: Simplify right side
    55,129.20x = 1,946,800,120.32
  5. Step 5: Solve for x
    x = 1,946,800,120.32/55,129.20
  6. Step 6: Final answer
    x = 35,313.41

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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.