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Finding the Fourth Proportional to 54,665, 82,021.33 and 19,151.80

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Solution

The fourth proportional to 54,665, 82,021.33 and 19,151.80 is: 28,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,665 : 82,021.33 = 19,151.80 : x
  2. Step 2: Convert to fraction form
    54,665/82,021.33 = 19,151.80/x
  3. Step 3: Cross multiply
    54,665x = 82,021.33 × 19,151.80
  4. Step 4: Simplify right side
    54,665x = 1,570,856,107.89
  5. Step 5: Solve for x
    x = 1,570,856,107.89/54,665
  6. Step 6: Final answer
    x = 28,736.05

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1.5x scale

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.