Home / 78,396.36-117,514.05-30,992.19

Finding the Fourth Proportional to 78,396.36, 117,514.05 and 30,992.19

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Solution

The fourth proportional to 78,396.36, 117,514.05 and 30,992.19 is: 46,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.36 : 117,514.05 = 30,992.19 : x
  2. Step 2: Convert to fraction form
    78,396.36/117,514.05 = 30,992.19/x
  3. Step 3: Cross multiply
    78,396.36x = 117,514.05 × 30,992.19
  4. Step 4: Simplify right side
    78,396.36x = 3,642,017,765.27
  5. Step 5: Solve for x
    x = 3,642,017,765.27/78,396.36
  6. Step 6: Final answer
    x = 46,456.47

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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.