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Finding the Fourth Proportional to 71,794.80, 107,713.80 and 38,530.80

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Solution

The fourth proportional to 71,794.80, 107,713.80 and 38,530.80 is: 57,807.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,794.80 : 107,713.80 = 38,530.80 : x
  2. Step 2: Convert to fraction form
    71,794.80/107,713.80 = 38,530.80/x
  3. Step 3: Cross multiply
    71,794.80x = 107,713.80 × 38,530.80
  4. Step 4: Simplify right side
    71,794.80x = 4,150,298,885.04
  5. Step 5: Solve for x
    x = 4,150,298,885.04/71,794.80
  6. Step 6: Final answer
    x = 57,807.79

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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.