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Finding the Fourth Proportional to 71,343.71, 107,015.60 and 18,035.85

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Solution

The fourth proportional to 71,343.71, 107,015.60 and 18,035.85 is: 27,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,343.71 : 107,015.60 = 18,035.85 : x
  2. Step 2: Convert to fraction form
    71,343.71/107,015.60 = 18,035.85/x
  3. Step 3: Cross multiply
    71,343.71x = 107,015.60 × 18,035.85
  4. Step 4: Simplify right side
    71,343.71x = 1,930,117,309.26
  5. Step 5: Solve for x
    x = 1,930,117,309.26/71,343.71
  6. Step 6: Final answer
    x = 27,053.78

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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.