Home / 45,431.67-68,147.49-12,150.87

Finding the Fourth Proportional to 45,431.67, 68,147.49 and 12,150.87

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Solution

The fourth proportional to 45,431.67, 68,147.49 and 12,150.87 is: 18,226.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,431.67 : 68,147.49 = 12,150.87 : x
  2. Step 2: Convert to fraction form
    45,431.67/68,147.49 = 12,150.87/x
  3. Step 3: Cross multiply
    45,431.67x = 68,147.49 × 12,150.87
  4. Step 4: Simplify right side
    45,431.67x = 828,051,231.06
  5. Step 5: Solve for x
    x = 828,051,231.06/45,431.67
  6. Step 6: Final answer
    x = 18,226.30

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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.