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Finding the Fourth Proportional to 36,744.75, 50,712.12 and 21,840.75

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Solution

The fourth proportional to 36,744.75, 50,712.12 and 21,840.75 is: 30,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,744.75 : 50,712.12 = 21,840.75 : x
  2. Step 2: Convert to fraction form
    36,744.75/50,712.12 = 21,840.75/x
  3. Step 3: Cross multiply
    36,744.75x = 50,712.12 × 21,840.75
  4. Step 4: Simplify right side
    36,744.75x = 1,107,590,734.89
  5. Step 5: Solve for x
    x = 1,107,590,734.89/36,744.75
  6. Step 6: Final answer
    x = 30,142.83

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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.