Home / 87,205.14-120,346.92-51,396.66

Finding the Fourth Proportional to 87,205.14, 120,346.92 and 51,396.66

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Solution

The fourth proportional to 87,205.14, 120,346.92 and 51,396.66 is: 70,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,205.14 : 120,346.92 = 51,396.66 : x
  2. Step 2: Convert to fraction form
    87,205.14/120,346.92 = 51,396.66/x
  3. Step 3: Cross multiply
    87,205.14x = 120,346.92 × 51,396.66
  4. Step 4: Simplify right side
    87,205.14x = 6,185,429,729.29
  5. Step 5: Solve for x
    x = 6,185,429,729.29/87,205.14
  6. Step 6: Final answer
    x = 70,929.65

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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.