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Finding the Fourth Proportional to 29,060.70, 43,481.70 and 19,219.20

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Solution

The fourth proportional to 29,060.70, 43,481.70 and 19,219.20 is: 28,756.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,060.70 : 43,481.70 = 19,219.20 : x
  2. Step 2: Convert to fraction form
    29,060.70/43,481.70 = 19,219.20/x
  3. Step 3: Cross multiply
    29,060.70x = 43,481.70 × 19,219.20
  4. Step 4: Simplify right side
    29,060.70x = 835,683,488.64
  5. Step 5: Solve for x
    x = 835,683,488.64/29,060.70
  6. Step 6: Final answer
    x = 28,756.48

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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.