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Finding the Fourth Proportional to 70,847.80, 106,289.12 and 20,927.64

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Solution

The fourth proportional to 70,847.80, 106,289.12 and 20,927.64 is: 31,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,847.80 : 106,289.12 = 20,927.64 : x
  2. Step 2: Convert to fraction form
    70,847.80/106,289.12 = 20,927.64/x
  3. Step 3: Cross multiply
    70,847.80x = 106,289.12 × 20,927.64
  4. Step 4: Simplify right side
    70,847.80x = 2,224,380,439.28
  5. Step 5: Solve for x
    x = 2,224,380,439.28/70,847.80
  6. Step 6: Final answer
    x = 31,396.61

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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.