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Finding the Fourth Proportional to 60,906.26, 91,336.64 and 20,913.89

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Solution

The fourth proportional to 60,906.26, 91,336.64 and 20,913.89 is: 31,363.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,906.26 : 91,336.64 = 20,913.89 : x
  2. Step 2: Convert to fraction form
    60,906.26/91,336.64 = 20,913.89/x
  3. Step 3: Cross multiply
    60,906.26x = 91,336.64 × 20,913.89
  4. Step 4: Simplify right side
    60,906.26x = 1,910,203,880.68
  5. Step 5: Solve for x
    x = 1,910,203,880.68/60,906.26
  6. Step 6: Final answer
    x = 31,363.02

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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.