Home / 49,201.80-73,812.30-21,121.80

Finding the Fourth Proportional to 49,201.80, 73,812.30 and 21,121.80

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Solution

The fourth proportional to 49,201.80, 73,812.30 and 21,121.80 is: 31,686.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,201.80 : 73,812.30 = 21,121.80 : x
  2. Step 2: Convert to fraction form
    49,201.80/73,812.30 = 21,121.80/x
  3. Step 3: Cross multiply
    49,201.80x = 73,812.30 × 21,121.80
  4. Step 4: Simplify right side
    49,201.80x = 1,559,048,638.14
  5. Step 5: Solve for x
    x = 1,559,048,638.14/49,201.80
  6. Step 6: Final answer
    x = 31,686.82

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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.