Home / 80,208.48-120,243.60-38,684.64

Finding the Fourth Proportional to 80,208.48, 120,243.60 and 38,684.64

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Solution

The fourth proportional to 80,208.48, 120,243.60 and 38,684.64 is: 57,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,208.48 : 120,243.60 = 38,684.64 : x
  2. Step 2: Convert to fraction form
    80,208.48/120,243.60 = 38,684.64/x
  3. Step 3: Cross multiply
    80,208.48x = 120,243.60 × 38,684.64
  4. Step 4: Simplify right side
    80,208.48x = 4,651,580,378.30
  5. Step 5: Solve for x
    x = 4,651,580,378.30/80,208.48
  6. Step 6: Final answer
    x = 57,993.62

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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.