Home / 54,488.80-81,733.20-19,429.60

Finding the Fourth Proportional to 54,488.80, 81,733.20 and 19,429.60

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Solution

The fourth proportional to 54,488.80, 81,733.20 and 19,429.60 is: 29,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,488.80 : 81,733.20 = 19,429.60 : x
  2. Step 2: Convert to fraction form
    54,488.80/81,733.20 = 19,429.60/x
  3. Step 3: Cross multiply
    54,488.80x = 81,733.20 × 19,429.60
  4. Step 4: Simplify right side
    54,488.80x = 1,588,043,382.72
  5. Step 5: Solve for x
    x = 1,588,043,382.72/54,488.80
  6. Step 6: Final answer
    x = 29,144.40

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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.