Home / 43,558.78-65,310.09-18,615.10

Finding the Fourth Proportional to 43,558.78, 65,310.09 and 18,615.10

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Solution

The fourth proportional to 43,558.78, 65,310.09 and 18,615.10 is: 27,910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,558.78 : 65,310.09 = 18,615.10 : x
  2. Step 2: Convert to fraction form
    43,558.78/65,310.09 = 18,615.10/x
  3. Step 3: Cross multiply
    43,558.78x = 65,310.09 × 18,615.10
  4. Step 4: Simplify right side
    43,558.78x = 1,215,753,856.36
  5. Step 5: Solve for x
    x = 1,215,753,856.36/43,558.78
  6. Step 6: Final answer
    x = 27,910.65

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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.