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Finding the Fourth Proportional to 89,770.98, 123,884.81 and 49,486.21

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Solution

The fourth proportional to 89,770.98, 123,884.81 and 49,486.21 is: 68,291.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,770.98 : 123,884.81 = 49,486.21 : x
  2. Step 2: Convert to fraction form
    89,770.98/123,884.81 = 49,486.21/x
  3. Step 3: Cross multiply
    89,770.98x = 123,884.81 × 49,486.21
  4. Step 4: Simplify right side
    89,770.98x = 6,130,589,351.90
  5. Step 5: Solve for x
    x = 6,130,589,351.90/89,770.98
  6. Step 6: Final answer
    x = 68,291.44

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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.