Home / 90,406.20-135,583.38-31,239.48

Finding the Fourth Proportional to 90,406.20, 135,583.38 and 31,239.48

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Solution

The fourth proportional to 90,406.20, 135,583.38 and 31,239.48 is: 46,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,406.20 : 135,583.38 = 31,239.48 : x
  2. Step 2: Convert to fraction form
    90,406.20/135,583.38 = 31,239.48/x
  3. Step 3: Cross multiply
    90,406.20x = 135,583.38 × 31,239.48
  4. Step 4: Simplify right side
    90,406.20x = 4,235,554,287.84
  5. Step 5: Solve for x
    x = 4,235,554,287.84/90,406.20
  6. Step 6: Final answer
    x = 46,850.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.