Home / 89,131.21-122,981.11-50,878.55

Finding the Fourth Proportional to 89,131.21, 122,981.11 and 50,878.55

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Solution

The fourth proportional to 89,131.21, 122,981.11 and 50,878.55 is: 70,201.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,131.21 : 122,981.11 = 50,878.55 : x
  2. Step 2: Convert to fraction form
    89,131.21/122,981.11 = 50,878.55/x
  3. Step 3: Cross multiply
    89,131.21x = 122,981.11 × 50,878.55
  4. Step 4: Simplify right side
    89,131.21x = 6,257,100,734.45
  5. Step 5: Solve for x
    x = 6,257,100,734.45/89,131.21
  6. Step 6: Final answer
    x = 70,201.01

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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.