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Finding the Fourth Proportional to 89,657.94, 134,311.92 and 69,843.72

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Solution

The fourth proportional to 89,657.94, 134,311.92 and 69,843.72 is: 104,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,657.94 : 134,311.92 = 69,843.72 : x
  2. Step 2: Convert to fraction form
    89,657.94/134,311.92 = 69,843.72/x
  3. Step 3: Cross multiply
    89,657.94x = 134,311.92 × 69,843.72
  4. Step 4: Simplify right side
    89,657.94x = 9,380,844,133.14
  5. Step 5: Solve for x
    x = 9,380,844,133.14/89,657.94
  6. Step 6: Final answer
    x = 104,629.26

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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.