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Finding the Fourth Proportional to 50,819.99, 70,129.68 and 29,310.63

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Solution

The fourth proportional to 50,819.99, 70,129.68 and 29,310.63 is: 40,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,819.99 : 70,129.68 = 29,310.63 : x
  2. Step 2: Convert to fraction form
    50,819.99/70,129.68 = 29,310.63/x
  3. Step 3: Cross multiply
    50,819.99x = 70,129.68 × 29,310.63
  4. Step 4: Simplify right side
    50,819.99x = 2,055,544,729.60
  5. Step 5: Solve for x
    x = 2,055,544,729.60/50,819.99
  6. Step 6: Final answer
    x = 40,447.57

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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.