Home / 87,586.36-120,823.32-55,309.28

Finding the Fourth Proportional to 87,586.36, 120,823.32 and 55,309.28

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Solution

The fourth proportional to 87,586.36, 120,823.32 and 55,309.28 is: 76,297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,586.36 : 120,823.32 = 55,309.28 : x
  2. Step 2: Convert to fraction form
    87,586.36/120,823.32 = 55,309.28/x
  3. Step 3: Cross multiply
    87,586.36x = 120,823.32 × 55,309.28
  4. Step 4: Simplify right side
    87,586.36x = 6,682,650,836.41
  5. Step 5: Solve for x
    x = 6,682,650,836.41/87,586.36
  6. Step 6: Final answer
    x = 76,297.85

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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.