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Finding the Fourth Proportional to 79,099.80, 109,157.72 and 43,289.84

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Solution

The fourth proportional to 79,099.80, 109,157.72 and 43,289.84 is: 59,739.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,099.80 : 109,157.72 = 43,289.84 : x
  2. Step 2: Convert to fraction form
    79,099.80/109,157.72 = 43,289.84/x
  3. Step 3: Cross multiply
    79,099.80x = 109,157.72 × 43,289.84
  4. Step 4: Simplify right side
    79,099.80x = 4,725,420,233.56
  5. Step 5: Solve for x
    x = 4,725,420,233.56/79,099.80
  6. Step 6: Final answer
    x = 59,739.98

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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.