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Finding the Fourth Proportional to 72,794.54, 100,456.42 and 40,963.47

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Solution

The fourth proportional to 72,794.54, 100,456.42 and 40,963.47 is: 56,529.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,794.54 : 100,456.42 = 40,963.47 : x
  2. Step 2: Convert to fraction form
    72,794.54/100,456.42 = 40,963.47/x
  3. Step 3: Cross multiply
    72,794.54x = 100,456.42 × 40,963.47
  4. Step 4: Simplify right side
    72,794.54x = 4,115,043,546.98
  5. Step 5: Solve for x
    x = 4,115,043,546.98/72,794.54
  6. Step 6: Final answer
    x = 56,529.56

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1.5x scale

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.