Home / 78,033.60-117,007.20-31,233.60

Finding the Fourth Proportional to 78,033.60, 117,007.20 and 31,233.60

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Solution

The fourth proportional to 78,033.60, 117,007.20 and 31,233.60 is: 46,833.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,033.60 : 117,007.20 = 31,233.60 : x
  2. Step 2: Convert to fraction form
    78,033.60/117,007.20 = 31,233.60/x
  3. Step 3: Cross multiply
    78,033.60x = 117,007.20 × 31,233.60
  4. Step 4: Simplify right side
    78,033.60x = 3,654,556,081.92
  5. Step 5: Solve for x
    x = 3,654,556,081.92/78,033.60
  6. Step 6: Final answer
    x = 46,833.11

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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.