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Finding the Fourth Proportional to 68,454.37, 102,538.50 and 55,054.90

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Solution

The fourth proportional to 68,454.37, 102,538.50 and 55,054.90 is: 82,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,454.37 : 102,538.50 = 55,054.90 : x
  2. Step 2: Convert to fraction form
    68,454.37/102,538.50 = 55,054.90/x
  3. Step 3: Cross multiply
    68,454.37x = 102,538.50 × 55,054.90
  4. Step 4: Simplify right side
    68,454.37x = 5,645,246,863.65
  5. Step 5: Solve for x
    x = 5,645,246,863.65/68,454.37
  6. Step 6: Final answer
    x = 82,467.30

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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.