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Finding the Fourth Proportional to 87,373, 131,059.56 and 21,709

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Solution

The fourth proportional to 87,373, 131,059.56 and 21,709 is: 32,563.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,373 : 131,059.56 = 21,709 : x
  2. Step 2: Convert to fraction form
    87,373/131,059.56 = 21,709/x
  3. Step 3: Cross multiply
    87,373x = 131,059.56 × 21,709
  4. Step 4: Simplify right side
    87,373x = 2,845,171,988.04
  5. Step 5: Solve for x
    x = 2,845,171,988.04/87,373
  6. Step 6: Final answer
    x = 32,563.51

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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.