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Finding the Fourth Proportional to 50,819.21, 70,135.70 and 29,309.79

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Solution

The fourth proportional to 50,819.21, 70,135.70 and 29,309.79 is: 40,450.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,819.21 : 70,135.70 = 29,309.79 : x
  2. Step 2: Convert to fraction form
    50,819.21/70,135.70 = 29,309.79/x
  3. Step 3: Cross multiply
    50,819.21x = 70,135.70 × 29,309.79
  4. Step 4: Simplify right side
    50,819.21x = 2,055,662,491.95
  5. Step 5: Solve for x
    x = 2,055,662,491.95/50,819.21
  6. Step 6: Final answer
    x = 40,450.50

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1.5x scale

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.