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Finding the Fourth Proportional to 79,521.35, 109,740.83 and 43,712.87

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Solution

The fourth proportional to 79,521.35, 109,740.83 and 43,712.87 is: 60,324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.35 : 109,740.83 = 43,712.87 : x
  2. Step 2: Convert to fraction form
    79,521.35/109,740.83 = 43,712.87/x
  3. Step 3: Cross multiply
    79,521.35x = 109,740.83 × 43,712.87
  4. Step 4: Simplify right side
    79,521.35x = 4,797,085,868.21
  5. Step 5: Solve for x
    x = 4,797,085,868.21/79,521.35
  6. Step 6: Final answer
    x = 60,324.51

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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.