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Finding the Fourth Proportional to 90,241.36, 135,334.69 and 37,638.54

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Solution

The fourth proportional to 90,241.36, 135,334.69 and 37,638.54 is: 56,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,241.36 : 135,334.69 = 37,638.54 : x
  2. Step 2: Convert to fraction form
    90,241.36/135,334.69 = 37,638.54/x
  3. Step 3: Cross multiply
    90,241.36x = 135,334.69 × 37,638.54
  4. Step 4: Simplify right side
    90,241.36x = 5,093,800,048.86
  5. Step 5: Solve for x
    x = 5,093,800,048.86/90,241.36
  6. Step 6: Final answer
    x = 56,446.40

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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.