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Finding the Fourth Proportional to 89,692.62, 123,774.84 and 49,405.74

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Solution

The fourth proportional to 89,692.62, 123,774.84 and 49,405.74 is: 68,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,692.62 : 123,774.84 = 49,405.74 : x
  2. Step 2: Convert to fraction form
    89,692.62/123,774.84 = 49,405.74/x
  3. Step 3: Cross multiply
    89,692.62x = 123,774.84 × 49,405.74
  4. Step 4: Simplify right side
    89,692.62x = 6,115,187,563.58
  5. Step 5: Solve for x
    x = 6,115,187,563.58/89,692.62
  6. Step 6: Final answer
    x = 68,179.38

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1.5x scale

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.