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Finding the Fourth Proportional to 88,119.84, 121,611.30 and 49,879.32

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Solution

The fourth proportional to 88,119.84, 121,611.30 and 49,879.32 is: 68,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,119.84 : 121,611.30 = 49,879.32 : x
  2. Step 2: Convert to fraction form
    88,119.84/121,611.30 = 49,879.32/x
  3. Step 3: Cross multiply
    88,119.84x = 121,611.30 × 49,879.32
  4. Step 4: Simplify right side
    88,119.84x = 6,065,888,948.32
  5. Step 5: Solve for x
    x = 6,065,888,948.32/88,119.84
  6. Step 6: Final answer
    x = 68,836.81

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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.