Home / 90,928.36-125,481-50,645.62

Finding the Fourth Proportional to 90,928.36, 125,481 and 50,645.62

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Solution

The fourth proportional to 90,928.36, 125,481 and 50,645.62 is: 69,890.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,928.36 : 125,481 = 50,645.62 : x
  2. Step 2: Convert to fraction form
    90,928.36/125,481 = 50,645.62/x
  3. Step 3: Cross multiply
    90,928.36x = 125,481 × 50,645.62
  4. Step 4: Simplify right side
    90,928.36x = 6,355,063,043.22
  5. Step 5: Solve for x
    x = 6,355,063,043.22/90,928.36
  6. Step 6: Final answer
    x = 69,890.88

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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.