Home / 87,122.52-120,271.32-58,431.71

Finding the Fourth Proportional to 87,122.52, 120,271.32 and 58,431.71

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Solution

The fourth proportional to 87,122.52, 120,271.32 and 58,431.71 is: 80,664.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,122.52 : 120,271.32 = 58,431.71 : x
  2. Step 2: Convert to fraction form
    87,122.52/120,271.32 = 58,431.71/x
  3. Step 3: Cross multiply
    87,122.52x = 120,271.32 × 58,431.71
  4. Step 4: Simplify right side
    87,122.52x = 7,027,659,192.24
  5. Step 5: Solve for x
    x = 7,027,659,192.24/87,122.52
  6. Step 6: Final answer
    x = 80,664.09

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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.