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Finding the Fourth Proportional to 71,188, 98,236.33 and 40,974.29

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Solution

The fourth proportional to 71,188, 98,236.33 and 40,974.29 is: 56,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188 : 98,236.33 = 40,974.29 : x
  2. Step 2: Convert to fraction form
    71,188/98,236.33 = 40,974.29/x
  3. Step 3: Cross multiply
    71,188x = 98,236.33 × 40,974.29
  4. Step 4: Simplify right side
    71,188x = 4,025,163,873.96
  5. Step 5: Solve for x
    x = 4,025,163,873.96/71,188
  6. Step 6: Final answer
    x = 56,542.73

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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.