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Finding the Fourth Proportional to 68,845.50, 94,930.90 and 47,587.86

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Solution

The fourth proportional to 68,845.50, 94,930.90 and 47,587.86 is: 65,618.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,845.50 : 94,930.90 = 47,587.86 : x
  2. Step 2: Convert to fraction form
    68,845.50/94,930.90 = 47,587.86/x
  3. Step 3: Cross multiply
    68,845.50x = 94,930.90 × 47,587.86
  4. Step 4: Simplify right side
    68,845.50x = 4,517,558,378.87
  5. Step 5: Solve for x
    x = 4,517,558,378.87/68,845.50
  6. Step 6: Final answer
    x = 65,618.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.