Home / 87,682.88-120,922.92-57,457.14

Finding the Fourth Proportional to 87,682.88, 120,922.92 and 57,457.14

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Solution

The fourth proportional to 87,682.88, 120,922.92 and 57,457.14 is: 79,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,682.88 : 120,922.92 = 57,457.14 : x
  2. Step 2: Convert to fraction form
    87,682.88/120,922.92 = 57,457.14/x
  3. Step 3: Cross multiply
    87,682.88x = 120,922.92 × 57,457.14
  4. Step 4: Simplify right side
    87,682.88x = 6,947,885,143.65
  5. Step 5: Solve for x
    x = 6,947,885,143.65/87,682.88
  6. Step 6: Final answer
    x = 79,238.79

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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.