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Finding the Fourth Proportional to 88,187.46, 121,692.42 and 49,950.87

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Solution

The fourth proportional to 88,187.46, 121,692.42 and 49,950.87 is: 68,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,187.46 : 121,692.42 = 49,950.87 : x
  2. Step 2: Convert to fraction form
    88,187.46/121,692.42 = 49,950.87/x
  3. Step 3: Cross multiply
    88,187.46x = 121,692.42 × 49,950.87
  4. Step 4: Simplify right side
    88,187.46x = 6,078,642,251.41
  5. Step 5: Solve for x
    x = 6,078,642,251.41/88,187.46
  6. Step 6: Final answer
    x = 68,928.65

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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.