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Finding the Fourth Proportional to 70,775.36, 106,082.56 and 36,989.29

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Solution

The fourth proportional to 70,775.36, 106,082.56 and 36,989.29 is: 55,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,775.36 : 106,082.56 = 36,989.29 : x
  2. Step 2: Convert to fraction form
    70,775.36/106,082.56 = 36,989.29/x
  3. Step 3: Cross multiply
    70,775.36x = 106,082.56 × 36,989.29
  4. Step 4: Simplify right side
    70,775.36x = 3,923,918,575.78
  5. Step 5: Solve for x
    x = 3,923,918,575.78/70,775.36
  6. Step 6: Final answer
    x = 55,441.87

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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.