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Finding the Fourth Proportional to 73,179.66, 109,756.70 and 20,576.64

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Solution

The fourth proportional to 73,179.66, 109,756.70 and 20,576.64 is: 30,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,179.66 : 109,756.70 = 20,576.64 : x
  2. Step 2: Convert to fraction form
    73,179.66/109,756.70 = 20,576.64/x
  3. Step 3: Cross multiply
    73,179.66x = 109,756.70 × 20,576.64
  4. Step 4: Simplify right side
    73,179.66x = 2,258,424,103.49
  5. Step 5: Solve for x
    x = 2,258,424,103.49/73,179.66
  6. Step 6: Final answer
    x = 30,861.36

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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.