Home / 54,091.12-80,939.32-31,915.12

Finding the Fourth Proportional to 54,091.12, 80,939.32 and 31,915.12

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Solution

The fourth proportional to 54,091.12, 80,939.32 and 31,915.12 is: 47,756.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,091.12 : 80,939.32 = 31,915.12 : x
  2. Step 2: Convert to fraction form
    54,091.12/80,939.32 = 31,915.12/x
  3. Step 3: Cross multiply
    54,091.12x = 80,939.32 × 31,915.12
  4. Step 4: Simplify right side
    54,091.12x = 2,583,188,110.52
  5. Step 5: Solve for x
    x = 2,583,188,110.52/54,091.12
  6. Step 6: Final answer
    x = 47,756.23

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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.