Home / 51,101.49-76,661.52-21,115.80

Finding the Fourth Proportional to 51,101.49, 76,661.52 and 21,115.80

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Solution

The fourth proportional to 51,101.49, 76,661.52 and 21,115.80 is: 31,677.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,101.49 : 76,661.52 = 21,115.80 : x
  2. Step 2: Convert to fraction form
    51,101.49/76,661.52 = 21,115.80/x
  3. Step 3: Cross multiply
    51,101.49x = 76,661.52 × 21,115.80
  4. Step 4: Simplify right side
    51,101.49x = 1,618,769,324.02
  5. Step 5: Solve for x
    x = 1,618,769,324.02/51,101.49
  6. Step 6: Final answer
    x = 31,677.54

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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.