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Finding the Fourth Proportional to 54,361.78, 81,538.99 and 14,915.59

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Solution

The fourth proportional to 54,361.78, 81,538.99 and 14,915.59 is: 22,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,361.78 : 81,538.99 = 14,915.59 : x
  2. Step 2: Convert to fraction form
    54,361.78/81,538.99 = 14,915.59/x
  3. Step 3: Cross multiply
    54,361.78x = 81,538.99 × 14,915.59
  4. Step 4: Simplify right side
    54,361.78x = 1,216,202,143.85
  5. Step 5: Solve for x
    x = 1,216,202,143.85/54,361.78
  6. Step 6: Final answer
    x = 22,372.38

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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.