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Finding the Fourth Proportional to 54,855.99, 82,234.71 and 19,787.45

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Solution

The fourth proportional to 54,855.99, 82,234.71 and 19,787.45 is: 29,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,855.99 : 82,234.71 = 19,787.45 : x
  2. Step 2: Convert to fraction form
    54,855.99/82,234.71 = 19,787.45/x
  3. Step 3: Cross multiply
    54,855.99x = 82,234.71 × 19,787.45
  4. Step 4: Simplify right side
    54,855.99x = 1,627,214,801.22
  5. Step 5: Solve for x
    x = 1,627,214,801.22/54,855.99
  6. Step 6: Final answer
    x = 29,663.39

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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.