Home / 87,028.53-120,071.01-50,721.69

Finding the Fourth Proportional to 87,028.53, 120,071.01 and 50,721.69

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Solution

The fourth proportional to 87,028.53, 120,071.01 and 50,721.69 is: 69,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,028.53 : 120,071.01 = 50,721.69 : x
  2. Step 2: Convert to fraction form
    87,028.53/120,071.01 = 50,721.69/x
  3. Step 3: Cross multiply
    87,028.53x = 120,071.01 × 50,721.69
  4. Step 4: Simplify right side
    87,028.53x = 6,090,204,902.37
  5. Step 5: Solve for x
    x = 6,090,204,902.37/87,028.53
  6. Step 6: Final answer
    x = 69,979.41

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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.