Home / 50,515.80-75,741.30-20,945.40

Finding the Fourth Proportional to 50,515.80, 75,741.30 and 20,945.40

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Solution

The fourth proportional to 50,515.80, 75,741.30 and 20,945.40 is: 31,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,515.80 : 75,741.30 = 20,945.40 : x
  2. Step 2: Convert to fraction form
    50,515.80/75,741.30 = 20,945.40/x
  3. Step 3: Cross multiply
    50,515.80x = 75,741.30 × 20,945.40
  4. Step 4: Simplify right side
    50,515.80x = 1,586,431,825.02
  5. Step 5: Solve for x
    x = 1,586,431,825.02/50,515.80
  6. Step 6: Final answer
    x = 31,404.67

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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.