Home / 41,112.80-61,669.20-21,429.80

Finding the Fourth Proportional to 41,112.80, 61,669.20 and 21,429.80

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Solution

The fourth proportional to 41,112.80, 61,669.20 and 21,429.80 is: 32,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,112.80 : 61,669.20 = 21,429.80 : x
  2. Step 2: Convert to fraction form
    41,112.80/61,669.20 = 21,429.80/x
  3. Step 3: Cross multiply
    41,112.80x = 61,669.20 × 21,429.80
  4. Step 4: Simplify right side
    41,112.80x = 1,321,558,622.16
  5. Step 5: Solve for x
    x = 1,321,558,622.16/41,112.80
  6. Step 6: Final answer
    x = 32,144.70

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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.