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Finding the Fourth Proportional to 43,687.94, 65,519.96 and 12,090.47

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Solution

The fourth proportional to 43,687.94, 65,519.96 and 12,090.47 is: 18,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,687.94 : 65,519.96 = 12,090.47 : x
  2. Step 2: Convert to fraction form
    43,687.94/65,519.96 = 12,090.47/x
  3. Step 3: Cross multiply
    43,687.94x = 65,519.96 × 12,090.47
  4. Step 4: Simplify right side
    43,687.94x = 792,166,722.73
  5. Step 5: Solve for x
    x = 792,166,722.73/43,687.94
  6. Step 6: Final answer
    x = 18,132.39

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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.