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Finding the Fourth Proportional to 51,959.76, 71,705.16 and 30,738.48

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Solution

The fourth proportional to 51,959.76, 71,705.16 and 30,738.48 is: 42,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,959.76 : 71,705.16 = 30,738.48 : x
  2. Step 2: Convert to fraction form
    51,959.76/71,705.16 = 30,738.48/x
  3. Step 3: Cross multiply
    51,959.76x = 71,705.16 × 30,738.48
  4. Step 4: Simplify right side
    51,959.76x = 2,204,107,626.56
  5. Step 5: Solve for x
    x = 2,204,107,626.56/51,959.76
  6. Step 6: Final answer
    x = 42,419.51

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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.