Home / 87,564.53-120,839.49-49,838.78

Finding the Fourth Proportional to 87,564.53, 120,839.49 and 49,838.78

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Solution

The fourth proportional to 87,564.53, 120,839.49 and 49,838.78 is: 68,777.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,564.53 : 120,839.49 = 49,838.78 : x
  2. Step 2: Convert to fraction form
    87,564.53/120,839.49 = 49,838.78/x
  3. Step 3: Cross multiply
    87,564.53x = 120,839.49 × 49,838.78
  4. Step 4: Simplify right side
    87,564.53x = 6,022,492,153.22
  5. Step 5: Solve for x
    x = 6,022,492,153.22/87,564.53
  6. Step 6: Final answer
    x = 68,777.76

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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.