Home / 88,919.44-122,740.32-78,421.84

Finding the Fourth Proportional to 88,919.44, 122,740.32 and 78,421.84

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Solution

The fourth proportional to 88,919.44, 122,740.32 and 78,421.84 is: 108,249.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,919.44 : 122,740.32 = 78,421.84 : x
  2. Step 2: Convert to fraction form
    88,919.44/122,740.32 = 78,421.84/x
  3. Step 3: Cross multiply
    88,919.44x = 122,740.32 × 78,421.84
  4. Step 4: Simplify right side
    88,919.44x = 9,625,521,736.59
  5. Step 5: Solve for x
    x = 9,625,521,736.59/88,919.44
  6. Step 6: Final answer
    x = 108,249.91

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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.