Home / 80,315.88-120,378.24-60,529.20

Finding the Fourth Proportional to 80,315.88, 120,378.24 and 60,529.20

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Solution

The fourth proportional to 80,315.88, 120,378.24 and 60,529.20 is: 90,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,315.88 : 120,378.24 = 60,529.20 : x
  2. Step 2: Convert to fraction form
    80,315.88/120,378.24 = 60,529.20/x
  3. Step 3: Cross multiply
    80,315.88x = 120,378.24 × 60,529.20
  4. Step 4: Simplify right side
    80,315.88x = 7,286,398,564.61
  5. Step 5: Solve for x
    x = 7,286,398,564.61/80,315.88
  6. Step 6: Final answer
    x = 90,721.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.