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Finding the Fourth Proportional to 55,169.60, 82,788.60 and 28,893.20

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Solution

The fourth proportional to 55,169.60, 82,788.60 and 28,893.20 is: 43,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,169.60 : 82,788.60 = 28,893.20 : x
  2. Step 2: Convert to fraction form
    55,169.60/82,788.60 = 28,893.20/x
  3. Step 3: Cross multiply
    55,169.60x = 82,788.60 × 28,893.20
  4. Step 4: Simplify right side
    55,169.60x = 2,392,027,577.52
  5. Step 5: Solve for x
    x = 2,392,027,577.52/55,169.60
  6. Step 6: Final answer
    x = 43,357.71

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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.