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Finding the Fourth Proportional to 90,257.82, 124,560.38 and 49,976.02

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Solution

The fourth proportional to 90,257.82, 124,560.38 and 49,976.02 is: 68,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,257.82 : 124,560.38 = 49,976.02 : x
  2. Step 2: Convert to fraction form
    90,257.82/124,560.38 = 49,976.02/x
  3. Step 3: Cross multiply
    90,257.82x = 124,560.38 × 49,976.02
  4. Step 4: Simplify right side
    90,257.82x = 6,225,032,042.09
  5. Step 5: Solve for x
    x = 6,225,032,042.09/90,257.82
  6. Step 6: Final answer
    x = 68,969.45

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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.