Home / 51,920.56-77,910.42-20,333.20

Finding the Fourth Proportional to 51,920.56, 77,910.42 and 20,333.20

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Solution

The fourth proportional to 51,920.56, 77,910.42 and 20,333.20 is: 30,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,920.56 : 77,910.42 = 20,333.20 : x
  2. Step 2: Convert to fraction form
    51,920.56/77,910.42 = 20,333.20/x
  3. Step 3: Cross multiply
    51,920.56x = 77,910.42 × 20,333.20
  4. Step 4: Simplify right side
    51,920.56x = 1,584,168,151.94
  5. Step 5: Solve for x
    x = 1,584,168,151.94/51,920.56
  6. Step 6: Final answer
    x = 30,511.38

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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.