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Finding the Fourth Proportional to 36,401.70, 50,232.21 and 20,485.50

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Solution

The fourth proportional to 36,401.70, 50,232.21 and 20,485.50 is: 28,268.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,401.70 : 50,232.21 = 20,485.50 : x
  2. Step 2: Convert to fraction form
    36,401.70/50,232.21 = 20,485.50/x
  3. Step 3: Cross multiply
    36,401.70x = 50,232.21 × 20,485.50
  4. Step 4: Simplify right side
    36,401.70x = 1,029,031,937.96
  5. Step 5: Solve for x
    x = 1,029,031,937.96/36,401.70
  6. Step 6: Final answer
    x = 28,268.79

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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.