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Finding the Fourth Proportional to 50,786.47, 70,104.14 and 30,644.20

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Solution

The fourth proportional to 50,786.47, 70,104.14 and 30,644.20 is: 42,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,786.47 : 70,104.14 = 30,644.20 : x
  2. Step 2: Convert to fraction form
    50,786.47/70,104.14 = 30,644.20/x
  3. Step 3: Cross multiply
    50,786.47x = 70,104.14 × 30,644.20
  4. Step 4: Simplify right side
    50,786.47x = 2,148,285,286.99
  5. Step 5: Solve for x
    x = 2,148,285,286.99/50,786.47
  6. Step 6: Final answer
    x = 42,300.35

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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.