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Finding the Fourth Proportional to 79,249.79, 109,360.53 and 43,439.09

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Solution

The fourth proportional to 79,249.79, 109,360.53 and 43,439.09 is: 59,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,249.79 : 109,360.53 = 43,439.09 : x
  2. Step 2: Convert to fraction form
    79,249.79/109,360.53 = 43,439.09/x
  3. Step 3: Cross multiply
    79,249.79x = 109,360.53 × 43,439.09
  4. Step 4: Simplify right side
    79,249.79x = 4,750,521,358.32
  5. Step 5: Solve for x
    x = 4,750,521,358.32/79,249.79
  6. Step 6: Final answer
    x = 59,943.64

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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.