Home / 87,586.86-120,824.01-55,309.78

Finding the Fourth Proportional to 87,586.86, 120,824.01 and 55,309.78

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Solution

The fourth proportional to 87,586.86, 120,824.01 and 55,309.78 is: 76,298.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,586.86 : 120,824.01 = 55,309.78 : x
  2. Step 2: Convert to fraction form
    87,586.86/120,824.01 = 55,309.78/x
  3. Step 3: Cross multiply
    87,586.86x = 120,824.01 × 55,309.78
  4. Step 4: Simplify right side
    87,586.86x = 6,682,749,411.82
  5. Step 5: Solve for x
    x = 6,682,749,411.82/87,586.86
  6. Step 6: Final answer
    x = 76,298.54

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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.