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Finding the Fourth Proportional to 71,660.99, 107,491.14 and 18,352.86

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Solution

The fourth proportional to 71,660.99, 107,491.14 and 18,352.86 is: 27,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,660.99 : 107,491.14 = 18,352.86 : x
  2. Step 2: Convert to fraction form
    71,660.99/107,491.14 = 18,352.86/x
  3. Step 3: Cross multiply
    71,660.99x = 107,491.14 × 18,352.86
  4. Step 4: Simplify right side
    71,660.99x = 1,972,769,843.66
  5. Step 5: Solve for x
    x = 1,972,769,843.66/71,660.99
  6. Step 6: Final answer
    x = 27,529.20

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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.