Home / 72,838.75-109,231.68-25,440.55

Finding the Fourth Proportional to 72,838.75, 109,231.68 and 25,440.55

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Solution

The fourth proportional to 72,838.75, 109,231.68 and 25,440.55 is: 38,151.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,838.75 : 109,231.68 = 25,440.55 : x
  2. Step 2: Convert to fraction form
    72,838.75/109,231.68 = 25,440.55/x
  3. Step 3: Cross multiply
    72,838.75x = 109,231.68 × 25,440.55
  4. Step 4: Simplify right side
    72,838.75x = 2,778,914,016.62
  5. Step 5: Solve for x
    x = 2,778,914,016.62/72,838.75
  6. Step 6: Final answer
    x = 38,151.59

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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.