Home / 80,981.94-121,487.16-27,661.38

Finding the Fourth Proportional to 80,981.94, 121,487.16 and 27,661.38

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Solution

The fourth proportional to 80,981.94, 121,487.16 and 27,661.38 is: 41,496.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.94 : 121,487.16 = 27,661.38 : x
  2. Step 2: Convert to fraction form
    80,981.94/121,487.16 = 27,661.38/x
  3. Step 3: Cross multiply
    80,981.94x = 121,487.16 × 27,661.38
  4. Step 4: Simplify right side
    80,981.94x = 3,360,502,497.88
  5. Step 5: Solve for x
    x = 3,360,502,497.88/80,981.94
  6. Step 6: Final answer
    x = 41,496.94

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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.