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Finding the Fourth Proportional to 71,144.58, 106,716.84 and 18,553.92

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Solution

The fourth proportional to 71,144.58, 106,716.84 and 18,553.92 is: 27,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,144.58 : 106,716.84 = 18,553.92 : x
  2. Step 2: Convert to fraction form
    71,144.58/106,716.84 = 18,553.92/x
  3. Step 3: Cross multiply
    71,144.58x = 106,716.84 × 18,553.92
  4. Step 4: Simplify right side
    71,144.58x = 1,980,015,712.01
  5. Step 5: Solve for x
    x = 1,980,015,712.01/71,144.58
  6. Step 6: Final answer
    x = 27,830.87

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1.5x scale

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.