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Finding the Fourth Proportional to 71,964.60, 107,806.59 and 43,814.85

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Solution

The fourth proportional to 71,964.60, 107,806.59 and 43,814.85 is: 65,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,964.60 : 107,806.59 = 43,814.85 : x
  2. Step 2: Convert to fraction form
    71,964.60/107,806.59 = 43,814.85/x
  3. Step 3: Cross multiply
    71,964.60x = 107,806.59 × 43,814.85
  4. Step 4: Simplify right side
    71,964.60x = 4,723,529,569.86
  5. Step 5: Solve for x
    x = 4,723,529,569.86/71,964.60
  6. Step 6: Final answer
    x = 65,636.85

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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.