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Finding the Fourth Proportional to 90,843.80, 136,314.30 and 38,258.60

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Solution

The fourth proportional to 90,843.80, 136,314.30 and 38,258.60 is: 57,408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.80 : 136,314.30 = 38,258.60 : x
  2. Step 2: Convert to fraction form
    90,843.80/136,314.30 = 38,258.60/x
  3. Step 3: Cross multiply
    90,843.80x = 136,314.30 × 38,258.60
  4. Step 4: Simplify right side
    90,843.80x = 5,215,194,277.98
  5. Step 5: Solve for x
    x = 5,215,194,277.98/90,843.80
  6. Step 6: Final answer
    x = 57,408.37

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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.