Home / 78,065.30-117,103.17-27,458.26

Finding the Fourth Proportional to 78,065.30, 117,103.17 and 27,458.26

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Solution

The fourth proportional to 78,065.30, 117,103.17 and 27,458.26 is: 41,189.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,065.30 : 117,103.17 = 27,458.26 : x
  2. Step 2: Convert to fraction form
    78,065.30/117,103.17 = 27,458.26/x
  3. Step 3: Cross multiply
    78,065.30x = 117,103.17 × 27,458.26
  4. Step 4: Simplify right side
    78,065.30x = 3,215,449,288.68
  5. Step 5: Solve for x
    x = 3,215,449,288.68/78,065.30
  6. Step 6: Final answer
    x = 41,189.23

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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.