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Finding the Fourth Proportional to 63,563.76, 95,359.82 and 20,871.09

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Solution

The fourth proportional to 63,563.76, 95,359.82 and 20,871.09 is: 31,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,563.76 : 95,359.82 = 20,871.09 : x
  2. Step 2: Convert to fraction form
    63,563.76/95,359.82 = 20,871.09/x
  3. Step 3: Cross multiply
    63,563.76x = 95,359.82 × 20,871.09
  4. Step 4: Simplify right side
    63,563.76x = 1,990,263,281.25
  5. Step 5: Solve for x
    x = 1,990,263,281.25/63,563.76
  6. Step 6: Final answer
    x = 31,311.29

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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.