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Finding the Fourth Proportional to 71,449.62, 107,174.48 and 18,145.59

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Solution

The fourth proportional to 71,449.62, 107,174.48 and 18,145.59 is: 27,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,449.62 : 107,174.48 = 18,145.59 : x
  2. Step 2: Convert to fraction form
    71,449.62/107,174.48 = 18,145.59/x
  3. Step 3: Cross multiply
    71,449.62x = 107,174.48 × 18,145.59
  4. Step 4: Simplify right side
    71,449.62x = 1,944,744,081.82
  5. Step 5: Solve for x
    x = 1,944,744,081.82/71,449.62
  6. Step 6: Final answer
    x = 27,218.40

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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.