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Finding the Fourth Proportional to 54,954.90, 82,443.15 and 19,893.78

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Solution

The fourth proportional to 54,954.90, 82,443.15 and 19,893.78 is: 29,844.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,954.90 : 82,443.15 = 19,893.78 : x
  2. Step 2: Convert to fraction form
    54,954.90/82,443.15 = 19,893.78/x
  3. Step 3: Cross multiply
    54,954.90x = 82,443.15 × 19,893.78
  4. Step 4: Simplify right side
    54,954.90x = 1,640,105,888.61
  5. Step 5: Solve for x
    x = 1,640,105,888.61/54,954.90
  6. Step 6: Final answer
    x = 29,844.58

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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.