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Finding the Fourth Proportional to 51,483.80, 71,042.44 and 28,821.32

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Solution

The fourth proportional to 51,483.80, 71,042.44 and 28,821.32 is: 39,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,483.80 : 71,042.44 = 28,821.32 : x
  2. Step 2: Convert to fraction form
    51,483.80/71,042.44 = 28,821.32/x
  3. Step 3: Cross multiply
    51,483.80x = 71,042.44 × 28,821.32
  4. Step 4: Simplify right side
    51,483.80x = 2,047,536,896.82
  5. Step 5: Solve for x
    x = 2,047,536,896.82/51,483.80
  6. Step 6: Final answer
    x = 39,770.51

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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.