Home / 88,081.76-121,507.62-55,761.56

Finding the Fourth Proportional to 88,081.76, 121,507.62 and 55,761.56

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Solution

The fourth proportional to 88,081.76, 121,507.62 and 55,761.56 is: 76,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,081.76 : 121,507.62 = 55,761.56 : x
  2. Step 2: Convert to fraction form
    88,081.76/121,507.62 = 55,761.56/x
  3. Step 3: Cross multiply
    88,081.76x = 121,507.62 × 55,761.56
  4. Step 4: Simplify right side
    88,081.76x = 6,775,454,443.09
  5. Step 5: Solve for x
    x = 6,775,454,443.09/88,081.76
  6. Step 6: Final answer
    x = 76,922.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.