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Finding the Fourth Proportional to 79,134.51, 109,205.22 and 43,323.87

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Solution

The fourth proportional to 79,134.51, 109,205.22 and 43,323.87 is: 59,786.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,134.51 : 109,205.22 = 43,323.87 : x
  2. Step 2: Convert to fraction form
    79,134.51/109,205.22 = 43,323.87/x
  3. Step 3: Cross multiply
    79,134.51x = 109,205.22 × 43,323.87
  4. Step 4: Simplify right side
    79,134.51x = 4,731,192,754.60
  5. Step 5: Solve for x
    x = 4,731,192,754.60/79,134.51
  6. Step 6: Final answer
    x = 59,786.72

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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.