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Finding the Fourth Proportional to 89,770.99, 123,883.93 and 49,485.43

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Solution

The fourth proportional to 89,770.99, 123,883.93 and 49,485.43 is: 68,289.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,770.99 : 123,883.93 = 49,485.43 : x
  2. Step 2: Convert to fraction form
    89,770.99/123,883.93 = 49,485.43/x
  3. Step 3: Cross multiply
    89,770.99x = 123,883.93 × 49,485.43
  4. Step 4: Simplify right side
    89,770.99x = 6,130,449,546.14
  5. Step 5: Solve for x
    x = 6,130,449,546.14/89,770.99
  6. Step 6: Final answer
    x = 68,289.87

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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.