Home / 81,304.40-121,994.94-28,738.64

Finding the Fourth Proportional to 81,304.40, 121,994.94 and 28,738.64

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Solution

The fourth proportional to 81,304.40, 121,994.94 and 28,738.64 is: 43,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,304.40 : 121,994.94 = 28,738.64 : x
  2. Step 2: Convert to fraction form
    81,304.40/121,994.94 = 28,738.64/x
  3. Step 3: Cross multiply
    81,304.40x = 121,994.94 × 28,738.64
  4. Step 4: Simplify right side
    81,304.40x = 3,505,968,662.48
  5. Step 5: Solve for x
    x = 3,505,968,662.48/81,304.40
  6. Step 6: Final answer
    x = 43,121.51

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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.