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Finding the Fourth Proportional to 87,858, 131,528.52 and 54,470.88

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Solution

The fourth proportional to 87,858, 131,528.52 and 54,470.88 is: 81,546.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858 : 131,528.52 = 54,470.88 : x
  2. Step 2: Convert to fraction form
    87,858/131,528.52 = 54,470.88/x
  3. Step 3: Cross multiply
    87,858x = 131,528.52 × 54,470.88
  4. Step 4: Simplify right side
    87,858x = 7,164,474,229.50
  5. Step 5: Solve for x
    x = 7,164,474,229.50/87,858
  6. Step 6: Final answer
    x = 81,546.07

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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.