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Finding the Fourth Proportional to 72,604.60, 108,920.72 and 25,217.89

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Solution

The fourth proportional to 72,604.60, 108,920.72 and 25,217.89 is: 37,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.60 : 108,920.72 = 25,217.89 : x
  2. Step 2: Convert to fraction form
    72,604.60/108,920.72 = 25,217.89/x
  3. Step 3: Cross multiply
    72,604.60x = 108,920.72 × 25,217.89
  4. Step 4: Simplify right side
    72,604.60x = 2,746,750,735.68
  5. Step 5: Solve for x
    x = 2,746,750,735.68/72,604.60
  6. Step 6: Final answer
    x = 37,831.64

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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.