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Finding the Fourth Proportional to 70,697.38, 106,062.96 and 20,776.38

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Solution

The fourth proportional to 70,697.38, 106,062.96 and 20,776.38 is: 31,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,697.38 : 106,062.96 = 20,776.38 : x
  2. Step 2: Convert to fraction form
    70,697.38/106,062.96 = 20,776.38/x
  3. Step 3: Cross multiply
    70,697.38x = 106,062.96 × 20,776.38
  4. Step 4: Simplify right side
    70,697.38x = 2,203,604,360.88
  5. Step 5: Solve for x
    x = 2,203,604,360.88/70,697.38
  6. Step 6: Final answer
    x = 31,169.53

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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.