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Finding the Fourth Proportional to 87,216.52, 130,844.26 and 31,812.52

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Solution

The fourth proportional to 87,216.52, 130,844.26 and 31,812.52 is: 47,725.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,216.52 : 130,844.26 = 31,812.52 : x
  2. Step 2: Convert to fraction form
    87,216.52/130,844.26 = 31,812.52/x
  3. Step 3: Cross multiply
    87,216.52x = 130,844.26 × 31,812.52
  4. Step 4: Simplify right side
    87,216.52x = 4,162,485,638.14
  5. Step 5: Solve for x
    x = 4,162,485,638.14/87,216.52
  6. Step 6: Final answer
    x = 47,725.89

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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.