Home / 47,205.24-70,857-20,928.42

Finding the Fourth Proportional to 47,205.24, 70,857 and 20,928.42

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Solution

The fourth proportional to 47,205.24, 70,857 and 20,928.42 is: 31,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,205.24 : 70,857 = 20,928.42 : x
  2. Step 2: Convert to fraction form
    47,205.24/70,857 = 20,928.42/x
  3. Step 3: Cross multiply
    47,205.24x = 70,857 × 20,928.42
  4. Step 4: Simplify right side
    47,205.24x = 1,482,925,055.94
  5. Step 5: Solve for x
    x = 1,482,925,055.94/47,205.24
  6. Step 6: Final answer
    x = 31,414.42

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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.