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Finding the Fourth Proportional to 70,161.50, 105,283.74 and 25,819.37

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Solution

The fourth proportional to 70,161.50, 105,283.74 and 25,819.37 is: 38,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,161.50 : 105,283.74 = 25,819.37 : x
  2. Step 2: Convert to fraction form
    70,161.50/105,283.74 = 25,819.37/x
  3. Step 3: Cross multiply
    70,161.50x = 105,283.74 × 25,819.37
  4. Step 4: Simplify right side
    70,161.50x = 2,718,359,311.63
  5. Step 5: Solve for x
    x = 2,718,359,311.63/70,161.50
  6. Step 6: Final answer
    x = 38,744.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.