Home / 54,763.75-82,170.33-31,390.21

Finding the Fourth Proportional to 54,763.75, 82,170.33 and 31,390.21

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Solution

The fourth proportional to 54,763.75, 82,170.33 and 31,390.21 is: 47,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,763.75 : 82,170.33 = 31,390.21 : x
  2. Step 2: Convert to fraction form
    54,763.75/82,170.33 = 31,390.21/x
  3. Step 3: Cross multiply
    54,763.75x = 82,170.33 × 31,390.21
  4. Step 4: Simplify right side
    54,763.75x = 2,579,343,914.47
  5. Step 5: Solve for x
    x = 2,579,343,914.47/54,763.75
  6. Step 6: Final answer
    x = 47,099.48

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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.