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Finding the Fourth Proportional to 43,808.60, 65,711.94 and 12,217.82

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Solution

The fourth proportional to 43,808.60, 65,711.94 and 12,217.82 is: 18,326.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808.60 : 65,711.94 = 12,217.82 : x
  2. Step 2: Convert to fraction form
    43,808.60/65,711.94 = 12,217.82/x
  3. Step 3: Cross multiply
    43,808.60x = 65,711.94 × 12,217.82
  4. Step 4: Simplify right side
    43,808.60x = 802,856,265.12
  5. Step 5: Solve for x
    x = 802,856,265.12/43,808.60
  6. Step 6: Final answer
    x = 18,326.46

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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.