Home / 72,180.24-108,241.68-27,782.40

Finding the Fourth Proportional to 72,180.24, 108,241.68 and 27,782.40

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Solution

The fourth proportional to 72,180.24, 108,241.68 and 27,782.40 is: 41,662.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,180.24 : 108,241.68 = 27,782.40 : x
  2. Step 2: Convert to fraction form
    72,180.24/108,241.68 = 27,782.40/x
  3. Step 3: Cross multiply
    72,180.24x = 108,241.68 × 27,782.40
  4. Step 4: Simplify right side
    72,180.24x = 3,007,213,650.43
  5. Step 5: Solve for x
    x = 3,007,213,650.43/72,180.24
  6. Step 6: Final answer
    x = 41,662.56

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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.