Home / 90,928.86-125,481.69-50,646.12

Finding the Fourth Proportional to 90,928.86, 125,481.69 and 50,646.12

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Solution

The fourth proportional to 90,928.86, 125,481.69 and 50,646.12 is: 69,891.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,928.86 : 125,481.69 = 50,646.12 : x
  2. Step 2: Convert to fraction form
    90,928.86/125,481.69 = 50,646.12/x
  3. Step 3: Cross multiply
    90,928.86x = 125,481.69 × 50,646.12
  4. Step 4: Simplify right side
    90,928.86x = 6,355,160,729.54
  5. Step 5: Solve for x
    x = 6,355,160,729.54/90,928.86
  6. Step 6: Final answer
    x = 69,891.57

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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.