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Finding the Fourth Proportional to 79,661.48, 109,871.44 and 49,464.68

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Solution

The fourth proportional to 79,661.48, 109,871.44 and 49,464.68 is: 68,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.48 : 109,871.44 = 49,464.68 : x
  2. Step 2: Convert to fraction form
    79,661.48/109,871.44 = 49,464.68/x
  3. Step 3: Cross multiply
    79,661.48x = 109,871.44 × 49,464.68
  4. Step 4: Simplify right side
    79,661.48x = 5,434,755,620.74
  5. Step 5: Solve for x
    x = 5,434,755,620.74/79,661.48
  6. Step 6: Final answer
    x = 68,223.13

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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.