Home / 43,420.85-65,162.39-18,478.42

Finding the Fourth Proportional to 43,420.85, 65,162.39 and 18,478.42

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Solution

The fourth proportional to 43,420.85, 65,162.39 and 18,478.42 is: 27,730.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,420.85 : 65,162.39 = 18,478.42 : x
  2. Step 2: Convert to fraction form
    43,420.85/65,162.39 = 18,478.42/x
  3. Step 3: Cross multiply
    43,420.85x = 65,162.39 × 18,478.42
  4. Step 4: Simplify right side
    43,420.85x = 1,204,097,999.68
  5. Step 5: Solve for x
    x = 1,204,097,999.68/43,420.85
  6. Step 6: Final answer
    x = 27,730.87

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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.