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Finding the Fourth Proportional to 51,811.88, 71,500.39 and 29,455.88

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Solution

The fourth proportional to 51,811.88, 71,500.39 and 29,455.88 is: 40,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,811.88 : 71,500.39 = 29,455.88 : x
  2. Step 2: Convert to fraction form
    51,811.88/71,500.39 = 29,455.88/x
  3. Step 3: Cross multiply
    51,811.88x = 71,500.39 × 29,455.88
  4. Step 4: Simplify right side
    51,811.88x = 2,106,106,476.65
  5. Step 5: Solve for x
    x = 2,106,106,476.65/51,811.88
  6. Step 6: Final answer
    x = 40,649.11

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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.