Home / 73,821.92-110,730-21,231.20

Finding the Fourth Proportional to 73,821.92, 110,730 and 21,231.20

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Solution

The fourth proportional to 73,821.92, 110,730 and 21,231.20 is: 31,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,821.92 : 110,730 = 21,231.20 : x
  2. Step 2: Convert to fraction form
    73,821.92/110,730 = 21,231.20/x
  3. Step 3: Cross multiply
    73,821.92x = 110,730 × 21,231.20
  4. Step 4: Simplify right side
    73,821.92x = 2,350,930,776
  5. Step 5: Solve for x
    x = 2,350,930,776/73,821.92
  6. Step 6: Final answer
    x = 31,845.97

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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.