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Finding the Fourth Proportional to 87,059.66, 130,589.49 and 57,470.58

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Solution

The fourth proportional to 87,059.66, 130,589.49 and 57,470.58 is: 86,205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,059.66 : 130,589.49 = 57,470.58 : x
  2. Step 2: Convert to fraction form
    87,059.66/130,589.49 = 57,470.58/x
  3. Step 3: Cross multiply
    87,059.66x = 130,589.49 × 57,470.58
  4. Step 4: Simplify right side
    87,059.66x = 7,505,053,732.20
  5. Step 5: Solve for x
    x = 7,505,053,732.20/87,059.66
  6. Step 6: Final answer
    x = 86,205.87

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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.