Home / 51,591.38-77,393.94-20,419.34

Finding the Fourth Proportional to 51,591.38, 77,393.94 and 20,419.34

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Solution

The fourth proportional to 51,591.38, 77,393.94 and 20,419.34 is: 30,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,591.38 : 77,393.94 = 20,419.34 : x
  2. Step 2: Convert to fraction form
    51,591.38/77,393.94 = 20,419.34/x
  3. Step 3: Cross multiply
    51,591.38x = 77,393.94 × 20,419.34
  4. Step 4: Simplify right side
    51,591.38x = 1,580,333,174.80
  5. Step 5: Solve for x
    x = 1,580,333,174.80/51,591.38
  6. Step 6: Final answer
    x = 30,631.73

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1.5x scale

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.