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Finding the Fourth Proportional to 81,893.83, 122,844.23 and 28,591.17

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Solution

The fourth proportional to 81,893.83, 122,844.23 and 28,591.17 is: 42,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,893.83 : 122,844.23 = 28,591.17 : x
  2. Step 2: Convert to fraction form
    81,893.83/122,844.23 = 28,591.17/x
  3. Step 3: Cross multiply
    81,893.83x = 122,844.23 × 28,591.17
  4. Step 4: Simplify right side
    81,893.83x = 3,512,260,334.93
  5. Step 5: Solve for x
    x = 3,512,260,334.93/81,893.83
  6. Step 6: Final answer
    x = 42,887.97

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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.