Home / 80,982.68-111,756.02-45,172.67

Finding the Fourth Proportional to 80,982.68, 111,756.02 and 45,172.67

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Solution

The fourth proportional to 80,982.68, 111,756.02 and 45,172.67 is: 62,338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,982.68 : 111,756.02 = 45,172.67 : x
  2. Step 2: Convert to fraction form
    80,982.68/111,756.02 = 45,172.67/x
  3. Step 3: Cross multiply
    80,982.68x = 111,756.02 × 45,172.67
  4. Step 4: Simplify right side
    80,982.68x = 5,048,317,027.33
  5. Step 5: Solve for x
    x = 5,048,317,027.33/80,982.68
  6. Step 6: Final answer
    x = 62,338.24

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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.