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Finding the Fourth Proportional to 73,199.32, 109,805.46 and 20,609.32

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Solution

The fourth proportional to 73,199.32, 109,805.46 and 20,609.32 is: 30,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,199.32 : 109,805.46 = 20,609.32 : x
  2. Step 2: Convert to fraction form
    73,199.32/109,805.46 = 20,609.32/x
  3. Step 3: Cross multiply
    73,199.32x = 109,805.46 × 20,609.32
  4. Step 4: Simplify right side
    73,199.32x = 2,263,015,862.89
  5. Step 5: Solve for x
    x = 2,263,015,862.89/73,199.32
  6. Step 6: Final answer
    x = 30,915.80

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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.