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Finding the Fourth Proportional to 37,279, 51,446.10 and 20,512

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Solution

The fourth proportional to 37,279, 51,446.10 and 20,512 is: 28,307.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,279 : 51,446.10 = 20,512 : x
  2. Step 2: Convert to fraction form
    37,279/51,446.10 = 20,512/x
  3. Step 3: Cross multiply
    37,279x = 51,446.10 × 20,512
  4. Step 4: Simplify right side
    37,279x = 1,055,262,403.20
  5. Step 5: Solve for x
    x = 1,055,262,403.20/37,279
  6. Step 6: Final answer
    x = 28,307.15

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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.