Home / 90,987.12-125,571.42-50,707.44

Finding the Fourth Proportional to 90,987.12, 125,571.42 and 50,707.44

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Solution

The fourth proportional to 90,987.12, 125,571.42 and 50,707.44 is: 69,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,987.12 : 125,571.42 = 50,707.44 : x
  2. Step 2: Convert to fraction form
    90,987.12/125,571.42 = 50,707.44/x
  3. Step 3: Cross multiply
    90,987.12x = 125,571.42 × 50,707.44
  4. Step 4: Simplify right side
    90,987.12x = 6,367,405,245.36
  5. Step 5: Solve for x
    x = 6,367,405,245.36/90,987.12
  6. Step 6: Final answer
    x = 69,981.39

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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.