Home / 81,270.04-121,910.46-31,350.64

Finding the Fourth Proportional to 81,270.04, 121,910.46 and 31,350.64

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Solution

The fourth proportional to 81,270.04, 121,910.46 and 31,350.64 is: 47,028.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.04 : 121,910.46 = 31,350.64 : x
  2. Step 2: Convert to fraction form
    81,270.04/121,910.46 = 31,350.64/x
  3. Step 3: Cross multiply
    81,270.04x = 121,910.46 × 31,350.64
  4. Step 4: Simplify right side
    81,270.04x = 3,821,970,943.69
  5. Step 5: Solve for x
    x = 3,821,970,943.69/81,270.04
  6. Step 6: Final answer
    x = 47,028.04

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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.