Home / 81,046.36-121,581.66-28,446.60

Finding the Fourth Proportional to 81,046.36, 121,581.66 and 28,446.60

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Solution

The fourth proportional to 81,046.36, 121,581.66 and 28,446.60 is: 42,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,046.36 : 121,581.66 = 28,446.60 : x
  2. Step 2: Convert to fraction form
    81,046.36/121,581.66 = 28,446.60/x
  3. Step 3: Cross multiply
    81,046.36x = 121,581.66 × 28,446.60
  4. Step 4: Simplify right side
    81,046.36x = 3,458,584,849.36
  5. Step 5: Solve for x
    x = 3,458,584,849.36/81,046.36
  6. Step 6: Final answer
    x = 42,674.15

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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.