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Finding the Fourth Proportional to 70,796.54, 106,197.11 and 20,872.45

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Solution

The fourth proportional to 70,796.54, 106,197.11 and 20,872.45 is: 31,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,796.54 : 106,197.11 = 20,872.45 : x
  2. Step 2: Convert to fraction form
    70,796.54/106,197.11 = 20,872.45/x
  3. Step 3: Cross multiply
    70,796.54x = 106,197.11 × 20,872.45
  4. Step 4: Simplify right side
    70,796.54x = 2,216,593,868.62
  5. Step 5: Solve for x
    x = 2,216,593,868.62/70,796.54
  6. Step 6: Final answer
    x = 31,309.35

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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.