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Finding the Fourth Proportional to 92,014.70, 138,103.05 and 54,527.90

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Solution

The fourth proportional to 92,014.70, 138,103.05 and 54,527.90 is: 81,839.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,014.70 : 138,103.05 = 54,527.90 : x
  2. Step 2: Convert to fraction form
    92,014.70/138,103.05 = 54,527.90/x
  3. Step 3: Cross multiply
    92,014.70x = 138,103.05 × 54,527.90
  4. Step 4: Simplify right side
    92,014.70x = 7,530,469,300.10
  5. Step 5: Solve for x
    x = 7,530,469,300.10/92,014.70
  6. Step 6: Final answer
    x = 81,839.85

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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.