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Finding the Fourth Proportional to 70,696.38, 106,061.46 and 20,775.38

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Solution

The fourth proportional to 70,696.38, 106,061.46 and 20,775.38 is: 31,168.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,696.38 : 106,061.46 = 20,775.38 : x
  2. Step 2: Convert to fraction form
    70,696.38/106,061.46 = 20,775.38/x
  3. Step 3: Cross multiply
    70,696.38x = 106,061.46 × 20,775.38
  4. Step 4: Simplify right side
    70,696.38x = 2,203,466,604.55
  5. Step 5: Solve for x
    x = 2,203,466,604.55/70,696.38
  6. Step 6: Final answer
    x = 31,168.03

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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.