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Finding the Fourth Proportional to 88,079.76, 121,504.86 and 55,759.56

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Solution

The fourth proportional to 88,079.76, 121,504.86 and 55,759.56 is: 76,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,079.76 : 121,504.86 = 55,759.56 : x
  2. Step 2: Convert to fraction form
    88,079.76/121,504.86 = 55,759.56/x
  3. Step 3: Cross multiply
    88,079.76x = 121,504.86 × 55,759.56
  4. Step 4: Simplify right side
    88,079.76x = 6,775,057,531.46
  5. Step 5: Solve for x
    x = 6,775,057,531.46/88,079.76
  6. Step 6: Final answer
    x = 76,919.57

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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.