Home / 54,429.26-81,649.05-21,151.89

Finding the Fourth Proportional to 54,429.26, 81,649.05 and 21,151.89

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Solution

The fourth proportional to 54,429.26, 81,649.05 and 21,151.89 is: 31,729.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,429.26 : 81,649.05 = 21,151.89 : x
  2. Step 2: Convert to fraction form
    54,429.26/81,649.05 = 21,151.89/x
  3. Step 3: Cross multiply
    54,429.26x = 81,649.05 × 21,151.89
  4. Step 4: Simplify right side
    54,429.26x = 1,727,031,874.52
  5. Step 5: Solve for x
    x = 1,727,031,874.52/54,429.26
  6. Step 6: Final answer
    x = 31,729.84

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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.