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Finding the Fourth Proportional to 89,812.99, 123,939.06 and 49,527.50

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Solution

The fourth proportional to 89,812.99, 123,939.06 and 49,527.50 is: 68,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,812.99 : 123,939.06 = 49,527.50 : x
  2. Step 2: Convert to fraction form
    89,812.99/123,939.06 = 49,527.50/x
  3. Step 3: Cross multiply
    89,812.99x = 123,939.06 × 49,527.50
  4. Step 4: Simplify right side
    89,812.99x = 6,138,391,794.15
  5. Step 5: Solve for x
    x = 6,138,391,794.15/89,812.99
  6. Step 6: Final answer
    x = 68,346.37

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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.