Home / 87,511.88-120,764.38-53,520.74

Finding the Fourth Proportional to 87,511.88, 120,764.38 and 53,520.74

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Solution

The fourth proportional to 87,511.88, 120,764.38 and 53,520.74 is: 73,857.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.88 : 120,764.38 = 53,520.74 : x
  2. Step 2: Convert to fraction form
    87,511.88/120,764.38 = 53,520.74/x
  3. Step 3: Cross multiply
    87,511.88x = 120,764.38 × 53,520.74
  4. Step 4: Simplify right side
    87,511.88x = 6,463,398,983.24
  5. Step 5: Solve for x
    x = 6,463,398,983.24/87,511.88
  6. Step 6: Final answer
    x = 73,857.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.