Home / 87,489.24-131,235.88-31,333.20

Finding the Fourth Proportional to 87,489.24, 131,235.88 and 31,333.20

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Solution

The fourth proportional to 87,489.24, 131,235.88 and 31,333.20 is: 47,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489.24 : 131,235.88 = 31,333.20 : x
  2. Step 2: Convert to fraction form
    87,489.24/131,235.88 = 31,333.20/x
  3. Step 3: Cross multiply
    87,489.24x = 131,235.88 × 31,333.20
  4. Step 4: Simplify right side
    87,489.24x = 4,112,040,075.22
  5. Step 5: Solve for x
    x = 4,112,040,075.22/87,489.24
  6. Step 6: Final answer
    x = 47,000.52

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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.