Home / 80,940.02-111,697.64-45,131.54

Finding the Fourth Proportional to 80,940.02, 111,697.64 and 45,131.54

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Solution

The fourth proportional to 80,940.02, 111,697.64 and 45,131.54 is: 62,281.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,940.02 : 111,697.64 = 45,131.54 : x
  2. Step 2: Convert to fraction form
    80,940.02/111,697.64 = 45,131.54/x
  3. Step 3: Cross multiply
    80,940.02x = 111,697.64 × 45,131.54
  4. Step 4: Simplify right side
    80,940.02x = 5,041,086,507.57
  5. Step 5: Solve for x
    x = 5,041,086,507.57/80,940.02
  6. Step 6: Final answer
    x = 62,281.76

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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.