Home / 31,122.32-42,731.84-30,310.44

Finding the Fourth Proportional to 31,122.32, 42,731.84 and 30,310.44

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Solution

The fourth proportional to 31,122.32, 42,731.84 and 30,310.44 is: 41,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.32 : 42,731.84 = 30,310.44 : x
  2. Step 2: Convert to fraction form
    31,122.32/42,731.84 = 30,310.44/x
  3. Step 3: Cross multiply
    31,122.32x = 42,731.84 × 30,310.44
  4. Step 4: Simplify right side
    31,122.32x = 1,295,220,872.41
  5. Step 5: Solve for x
    x = 1,295,220,872.41/31,122.32
  6. Step 6: Final answer
    x = 41,617.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.