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Finding the Fourth Proportional to 89,692.71, 123,776.97 and 49,405.65

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Solution

The fourth proportional to 89,692.71, 123,776.97 and 49,405.65 is: 68,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,692.71 : 123,776.97 = 49,405.65 : x
  2. Step 2: Convert to fraction form
    89,692.71/123,776.97 = 49,405.65/x
  3. Step 3: Cross multiply
    89,692.71x = 123,776.97 × 49,405.65
  4. Step 4: Simplify right side
    89,692.71x = 6,115,281,657.88
  5. Step 5: Solve for x
    x = 6,115,281,657.88/89,692.71
  6. Step 6: Final answer
    x = 68,180.36

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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.