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Finding the Fourth Proportional to 89,309.79, 123,247.78 and 49,027.68

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Solution

The fourth proportional to 89,309.79, 123,247.78 and 49,027.68 is: 67,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,309.79 : 123,247.78 = 49,027.68 : x
  2. Step 2: Convert to fraction form
    89,309.79/123,247.78 = 49,027.68/x
  3. Step 3: Cross multiply
    89,309.79x = 123,247.78 × 49,027.68
  4. Step 4: Simplify right side
    89,309.79x = 6,042,552,595.98
  5. Step 5: Solve for x
    x = 6,042,552,595.98/89,309.79
  6. Step 6: Final answer
    x = 67,658.35

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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.