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Finding the Fourth Proportional to 36,720.42, 50,673 and 21,609.60

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Solution

The fourth proportional to 36,720.42, 50,673 and 21,609.60 is: 29,820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,720.42 : 50,673 = 21,609.60 : x
  2. Step 2: Convert to fraction form
    36,720.42/50,673 = 21,609.60/x
  3. Step 3: Cross multiply
    36,720.42x = 50,673 × 21,609.60
  4. Step 4: Simplify right side
    36,720.42x = 1,095,023,260.80
  5. Step 5: Solve for x
    x = 1,095,023,260.80/36,720.42
  6. Step 6: Final answer
    x = 29,820.55

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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.