Home / 51,138.38-70,577.44-28,786.70

Finding the Fourth Proportional to 51,138.38, 70,577.44 and 28,786.70

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Solution

The fourth proportional to 51,138.38, 70,577.44 and 28,786.70 is: 39,729.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.38 : 70,577.44 = 28,786.70 : x
  2. Step 2: Convert to fraction form
    51,138.38/70,577.44 = 28,786.70/x
  3. Step 3: Cross multiply
    51,138.38x = 70,577.44 × 28,786.70
  4. Step 4: Simplify right side
    51,138.38x = 2,031,691,592.05
  5. Step 5: Solve for x
    x = 2,031,691,592.05/51,138.38
  6. Step 6: Final answer
    x = 39,729.29

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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.