Home / 90,739.09-125,206.32-50,453.20

Finding the Fourth Proportional to 90,739.09, 125,206.32 and 50,453.20

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Solution

The fourth proportional to 90,739.09, 125,206.32 and 50,453.20 is: 69,617.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.09 : 125,206.32 = 50,453.20 : x
  2. Step 2: Convert to fraction form
    90,739.09/125,206.32 = 50,453.20/x
  3. Step 3: Cross multiply
    90,739.09x = 125,206.32 × 50,453.20
  4. Step 4: Simplify right side
    90,739.09x = 6,317,059,504.22
  5. Step 5: Solve for x
    x = 6,317,059,504.22/90,739.09
  6. Step 6: Final answer
    x = 69,617.84

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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.