Home / 54,423.32-81,619.52-21,136.28

Finding the Fourth Proportional to 54,423.32, 81,619.52 and 21,136.28

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Solution

The fourth proportional to 54,423.32, 81,619.52 and 21,136.28 is: 31,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,423.32 : 81,619.52 = 21,136.28 : x
  2. Step 2: Convert to fraction form
    54,423.32/81,619.52 = 21,136.28/x
  3. Step 3: Cross multiply
    54,423.32x = 81,619.52 × 21,136.28
  4. Step 4: Simplify right side
    54,423.32x = 1,725,132,514.41
  5. Step 5: Solve for x
    x = 1,725,132,514.41/54,423.32
  6. Step 6: Final answer
    x = 31,698.41

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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.