Home / 68,178.08-94,063.20-39,863.72

Finding the Fourth Proportional to 68,178.08, 94,063.20 and 39,863.72

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Solution

The fourth proportional to 68,178.08, 94,063.20 and 39,863.72 is: 54,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,178.08 : 94,063.20 = 39,863.72 : x
  2. Step 2: Convert to fraction form
    68,178.08/94,063.20 = 39,863.72/x
  3. Step 3: Cross multiply
    68,178.08x = 94,063.20 × 39,863.72
  4. Step 4: Simplify right side
    68,178.08x = 3,749,709,067.10
  5. Step 5: Solve for x
    x = 3,749,709,067.10/68,178.08
  6. Step 6: Final answer
    x = 54,998.75

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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.