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Finding the Fourth Proportional to 67,658.28, 101,475.54 and 20,911.56

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Solution

The fourth proportional to 67,658.28, 101,475.54 and 20,911.56 is: 31,363.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,658.28 : 101,475.54 = 20,911.56 : x
  2. Step 2: Convert to fraction form
    67,658.28/101,475.54 = 20,911.56/x
  3. Step 3: Cross multiply
    67,658.28x = 101,475.54 × 20,911.56
  4. Step 4: Simplify right side
    67,658.28x = 2,122,011,843.24
  5. Step 5: Solve for x
    x = 2,122,011,843.24/67,658.28
  6. Step 6: Final answer
    x = 31,363.67

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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.