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Finding the Fourth Proportional to 81,832.75, 112,930.41 and 49,994.89

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Solution

The fourth proportional to 81,832.75, 112,930.41 and 49,994.89 is: 68,993.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,832.75 : 112,930.41 = 49,994.89 : x
  2. Step 2: Convert to fraction form
    81,832.75/112,930.41 = 49,994.89/x
  3. Step 3: Cross multiply
    81,832.75x = 112,930.41 × 49,994.89
  4. Step 4: Simplify right side
    81,832.75x = 5,645,943,425.60
  5. Step 5: Solve for x
    x = 5,645,943,425.60/81,832.75
  6. Step 6: Final answer
    x = 68,993.69

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1.5x scale

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.