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Finding the Fourth Proportional to 51,472.44, 71,032.21 and 28,811.88

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Solution

The fourth proportional to 51,472.44, 71,032.21 and 28,811.88 is: 39,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,472.44 : 71,032.21 = 28,811.88 : x
  2. Step 2: Convert to fraction form
    51,472.44/71,032.21 = 28,811.88/x
  3. Step 3: Cross multiply
    51,472.44x = 71,032.21 × 28,811.88
  4. Step 4: Simplify right side
    51,472.44x = 2,046,571,510.65
  5. Step 5: Solve for x
    x = 2,046,571,510.65/51,472.44
  6. Step 6: Final answer
    x = 39,760.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.