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Finding the Fourth Proportional to 71,429.80, 107,067.90 and 27,039.40

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Solution

The fourth proportional to 71,429.80, 107,067.90 and 27,039.40 is: 40,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,429.80 : 107,067.90 = 27,039.40 : x
  2. Step 2: Convert to fraction form
    71,429.80/107,067.90 = 27,039.40/x
  3. Step 3: Cross multiply
    71,429.80x = 107,067.90 × 27,039.40
  4. Step 4: Simplify right side
    71,429.80x = 2,895,051,775.26
  5. Step 5: Solve for x
    x = 2,895,051,775.26/71,429.80
  6. Step 6: Final answer
    x = 40,530.03

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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.