Home / 81,326.54-121,982.61-28,733.42

Finding the Fourth Proportional to 81,326.54, 121,982.61 and 28,733.42

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Solution

The fourth proportional to 81,326.54, 121,982.61 and 28,733.42 is: 43,097.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,326.54 : 121,982.61 = 28,733.42 : x
  2. Step 2: Convert to fraction form
    81,326.54/121,982.61 = 28,733.42/x
  3. Step 3: Cross multiply
    81,326.54x = 121,982.61 × 28,733.42
  4. Step 4: Simplify right side
    81,326.54x = 3,504,977,565.83
  5. Step 5: Solve for x
    x = 3,504,977,565.83/81,326.54
  6. Step 6: Final answer
    x = 43,097.59

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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.