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Finding the Fourth Proportional to 68,385.56, 102,574.62 and 18,464.96

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Solution

The fourth proportional to 68,385.56, 102,574.62 and 18,464.96 is: 27,696.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,385.56 : 102,574.62 = 18,464.96 : x
  2. Step 2: Convert to fraction form
    68,385.56/102,574.62 = 18,464.96/x
  3. Step 3: Cross multiply
    68,385.56x = 102,574.62 × 18,464.96
  4. Step 4: Simplify right side
    68,385.56x = 1,894,036,255.32
  5. Step 5: Solve for x
    x = 1,894,036,255.32/68,385.56
  6. Step 6: Final answer
    x = 27,696.44

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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.