Home / 87,019.52-120,080.88-51,201.92

Finding the Fourth Proportional to 87,019.52, 120,080.88 and 51,201.92

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Solution

The fourth proportional to 87,019.52, 120,080.88 and 51,201.92 is: 70,655.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,019.52 : 120,080.88 = 51,201.92 : x
  2. Step 2: Convert to fraction form
    87,019.52/120,080.88 = 51,201.92/x
  3. Step 3: Cross multiply
    87,019.52x = 120,080.88 × 51,201.92
  4. Step 4: Simplify right side
    87,019.52x = 6,148,371,911.49
  5. Step 5: Solve for x
    x = 6,148,371,911.49/87,019.52
  6. Step 6: Final answer
    x = 70,655.09

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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.