Home / 90,745.78-125,219.64-50,453.08

Finding the Fourth Proportional to 90,745.78, 125,219.64 and 50,453.08

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Solution

The fourth proportional to 90,745.78, 125,219.64 and 50,453.08 is: 69,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,745.78 : 125,219.64 = 50,453.08 : x
  2. Step 2: Convert to fraction form
    90,745.78/125,219.64 = 50,453.08/x
  3. Step 3: Cross multiply
    90,745.78x = 125,219.64 × 50,453.08
  4. Step 4: Simplify right side
    90,745.78x = 6,317,716,514.49
  5. Step 5: Solve for x
    x = 6,317,716,514.49/90,745.78
  6. Step 6: Final answer
    x = 69,619.95

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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.