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Finding the Fourth Proportional to 70,768.80, 106,204.40 and 29,245.60

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Solution

The fourth proportional to 70,768.80, 106,204.40 and 29,245.60 is: 43,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,768.80 : 106,204.40 = 29,245.60 : x
  2. Step 2: Convert to fraction form
    70,768.80/106,204.40 = 29,245.60/x
  3. Step 3: Cross multiply
    70,768.80x = 106,204.40 × 29,245.60
  4. Step 4: Simplify right side
    70,768.80x = 3,106,011,400.64
  5. Step 5: Solve for x
    x = 3,106,011,400.64/70,768.80
  6. Step 6: Final answer
    x = 43,889.56

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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.