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Finding the Fourth Proportional to 70,908.28, 106,377.56 and 35,388.72

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Solution

The fourth proportional to 70,908.28, 106,377.56 and 35,388.72 is: 53,090.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.28 : 106,377.56 = 35,388.72 : x
  2. Step 2: Convert to fraction form
    70,908.28/106,377.56 = 35,388.72/x
  3. Step 3: Cross multiply
    70,908.28x = 106,377.56 × 35,388.72
  4. Step 4: Simplify right side
    70,908.28x = 3,764,565,685.12
  5. Step 5: Solve for x
    x = 3,764,565,685.12/70,908.28
  6. Step 6: Final answer
    x = 53,090.64

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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.