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Finding the Fourth Proportional to 51,651.82, 71,273.64 and 28,986.13

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Solution

The fourth proportional to 51,651.82, 71,273.64 and 28,986.13 is: 39,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,651.82 : 71,273.64 = 28,986.13 : x
  2. Step 2: Convert to fraction form
    51,651.82/71,273.64 = 28,986.13/x
  3. Step 3: Cross multiply
    51,651.82x = 71,273.64 × 28,986.13
  4. Step 4: Simplify right side
    51,651.82x = 2,065,946,994.61
  5. Step 5: Solve for x
    x = 2,065,946,994.61/51,651.82
  6. Step 6: Final answer
    x = 39,997.56

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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.