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Finding the Fourth Proportional to 81,591.55, 122,393.25 and 34,158.94

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Solution

The fourth proportional to 81,591.55, 122,393.25 and 34,158.94 is: 51,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,591.55 : 122,393.25 = 34,158.94 : x
  2. Step 2: Convert to fraction form
    81,591.55/122,393.25 = 34,158.94/x
  3. Step 3: Cross multiply
    81,591.55x = 122,393.25 × 34,158.94
  4. Step 4: Simplify right side
    81,591.55x = 4,180,823,377.17
  5. Step 5: Solve for x
    x = 4,180,823,377.17/81,591.55
  6. Step 6: Final answer
    x = 51,240.89

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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.