Home / 45,147.78-67,728.02-18,846.54

Finding the Fourth Proportional to 45,147.78, 67,728.02 and 18,846.54

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Solution

The fourth proportional to 45,147.78, 67,728.02 and 18,846.54 is: 28,272.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,147.78 : 67,728.02 = 18,846.54 : x
  2. Step 2: Convert to fraction form
    45,147.78/67,728.02 = 18,846.54/x
  3. Step 3: Cross multiply
    45,147.78x = 67,728.02 × 18,846.54
  4. Step 4: Simplify right side
    45,147.78x = 1,276,438,743.82
  5. Step 5: Solve for x
    x = 1,276,438,743.82/45,147.78
  6. Step 6: Final answer
    x = 28,272.46

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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.