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Finding the Fourth Proportional to 90,361.84, 124,702.56 and 54,544.85

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Solution

The fourth proportional to 90,361.84, 124,702.56 and 54,544.85 is: 75,273.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.84 : 124,702.56 = 54,544.85 : x
  2. Step 2: Convert to fraction form
    90,361.84/124,702.56 = 54,544.85/x
  3. Step 3: Cross multiply
    90,361.84x = 124,702.56 × 54,544.85
  4. Step 4: Simplify right side
    90,361.84x = 6,801,882,157.09
  5. Step 5: Solve for x
    x = 6,801,882,157.09/90,361.84
  6. Step 6: Final answer
    x = 75,273.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.