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Finding the Fourth Proportional to 89,809, 134,732.94 and 34,405

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Solution

The fourth proportional to 89,809, 134,732.94 and 34,405 is: 51,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,809 : 134,732.94 = 34,405 : x
  2. Step 2: Convert to fraction form
    89,809/134,732.94 = 34,405/x
  3. Step 3: Cross multiply
    89,809x = 134,732.94 × 34,405
  4. Step 4: Simplify right side
    89,809x = 4,635,486,800.70
  5. Step 5: Solve for x
    x = 4,635,486,800.70/89,809
  6. Step 6: Final answer
    x = 51,614.95

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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.