Home / 89,721.05-123,820.57-49,434.80

Finding the Fourth Proportional to 89,721.05, 123,820.57 and 49,434.80

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Solution

The fourth proportional to 89,721.05, 123,820.57 and 49,434.80 is: 68,223.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.05 : 123,820.57 = 49,434.80 : x
  2. Step 2: Convert to fraction form
    89,721.05/123,820.57 = 49,434.80/x
  3. Step 3: Cross multiply
    89,721.05x = 123,820.57 × 49,434.80
  4. Step 4: Simplify right side
    89,721.05x = 6,121,045,299.80
  5. Step 5: Solve for x
    x = 6,121,045,299.80/89,721.05
  6. Step 6: Final answer
    x = 68,223.07

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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.