Home / 87,825-121,165.42-57,626.99

Finding the Fourth Proportional to 87,825, 121,165.42 and 57,626.99

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Solution

The fourth proportional to 87,825, 121,165.42 and 57,626.99 is: 79,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,825 : 121,165.42 = 57,626.99 : x
  2. Step 2: Convert to fraction form
    87,825/121,165.42 = 57,626.99/x
  3. Step 3: Cross multiply
    87,825x = 121,165.42 × 57,626.99
  4. Step 4: Simplify right side
    87,825x = 6,982,398,446.69
  5. Step 5: Solve for x
    x = 6,982,398,446.69/87,825
  6. Step 6: Final answer
    x = 79,503.54

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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.