Home / 90,990.87-125,576.60-50,711.19

Finding the Fourth Proportional to 90,990.87, 125,576.60 and 50,711.19

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Solution

The fourth proportional to 90,990.87, 125,576.60 and 50,711.19 is: 69,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,990.87 : 125,576.60 = 50,711.19 : x
  2. Step 2: Convert to fraction form
    90,990.87/125,576.60 = 50,711.19/x
  3. Step 3: Cross multiply
    90,990.87x = 125,576.60 × 50,711.19
  4. Step 4: Simplify right side
    90,990.87x = 6,368,138,568.60
  5. Step 5: Solve for x
    x = 6,368,138,568.60/90,990.87
  6. Step 6: Final answer
    x = 69,986.57

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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.