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Finding the Fourth Proportional to 87,892.44, 121,299 and 49,659

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Solution

The fourth proportional to 87,892.44, 121,299 and 49,659 is: 68,533.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,892.44 : 121,299 = 49,659 : x
  2. Step 2: Convert to fraction form
    87,892.44/121,299 = 49,659/x
  3. Step 3: Cross multiply
    87,892.44x = 121,299 × 49,659
  4. Step 4: Simplify right side
    87,892.44x = 6,023,587,041
  5. Step 5: Solve for x
    x = 6,023,587,041/87,892.44
  6. Step 6: Final answer
    x = 68,533.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.