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Finding the Fourth Proportional to 79,989.88, 119,887.60 and 60,204.84

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Solution

The fourth proportional to 79,989.88, 119,887.60 and 60,204.84 is: 90,234.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,989.88 : 119,887.60 = 60,204.84 : x
  2. Step 2: Convert to fraction form
    79,989.88/119,887.60 = 60,204.84/x
  3. Step 3: Cross multiply
    79,989.88x = 119,887.60 × 60,204.84
  4. Step 4: Simplify right side
    79,989.88x = 7,217,813,775.98
  5. Step 5: Solve for x
    x = 7,217,813,775.98/79,989.88
  6. Step 6: Final answer
    x = 90,234.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.