Home / 51,019.92-70,408.44-28,360.80

Finding the Fourth Proportional to 51,019.92, 70,408.44 and 28,360.80

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Solution

The fourth proportional to 51,019.92, 70,408.44 and 28,360.80 is: 39,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,019.92 : 70,408.44 = 28,360.80 : x
  2. Step 2: Convert to fraction form
    51,019.92/70,408.44 = 28,360.80/x
  3. Step 3: Cross multiply
    51,019.92x = 70,408.44 × 28,360.80
  4. Step 4: Simplify right side
    51,019.92x = 1,996,839,685.15
  5. Step 5: Solve for x
    x = 1,996,839,685.15/51,019.92
  6. Step 6: Final answer
    x = 39,138.43

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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.