Home / 54,287.08-81,403.10-19,221.80

Finding the Fourth Proportional to 54,287.08, 81,403.10 and 19,221.80

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Solution

The fourth proportional to 54,287.08, 81,403.10 and 19,221.80 is: 28,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,287.08 : 81,403.10 = 19,221.80 : x
  2. Step 2: Convert to fraction form
    54,287.08/81,403.10 = 19,221.80/x
  3. Step 3: Cross multiply
    54,287.08x = 81,403.10 × 19,221.80
  4. Step 4: Simplify right side
    54,287.08x = 1,564,714,107.58
  5. Step 5: Solve for x
    x = 1,564,714,107.58/54,287.08
  6. Step 6: Final answer
    x = 28,822.96

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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.