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Finding the Fourth Proportional to 89,763.96, 123,873.79 and 49,477.80

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Solution

The fourth proportional to 89,763.96, 123,873.79 and 49,477.80 is: 68,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,763.96 : 123,873.79 = 49,477.80 : x
  2. Step 2: Convert to fraction form
    89,763.96/123,873.79 = 49,477.80/x
  3. Step 3: Cross multiply
    89,763.96x = 123,873.79 × 49,477.80
  4. Step 4: Simplify right side
    89,763.96x = 6,129,002,606.86
  5. Step 5: Solve for x
    x = 6,129,002,606.86/89,763.96
  6. Step 6: Final answer
    x = 68,279.10

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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.