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Finding the Fourth Proportional to 72,174.92, 99,621.51 and 49,517.60

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Solution

The fourth proportional to 72,174.92, 99,621.51 and 49,517.60 is: 68,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.92 : 99,621.51 = 49,517.60 : x
  2. Step 2: Convert to fraction form
    72,174.92/99,621.51 = 49,517.60/x
  3. Step 3: Cross multiply
    72,174.92x = 99,621.51 × 49,517.60
  4. Step 4: Simplify right side
    72,174.92x = 4,933,018,083.58
  5. Step 5: Solve for x
    x = 4,933,018,083.58/72,174.92
  6. Step 6: Final answer
    x = 68,348.09

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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.