Home / 47,411.78-71,121.74-12,351.38

Finding the Fourth Proportional to 47,411.78, 71,121.74 and 12,351.38

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Solution

The fourth proportional to 47,411.78, 71,121.74 and 12,351.38 is: 18,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,411.78 : 71,121.74 = 12,351.38 : x
  2. Step 2: Convert to fraction form
    47,411.78/71,121.74 = 12,351.38/x
  3. Step 3: Cross multiply
    47,411.78x = 71,121.74 × 12,351.38
  4. Step 4: Simplify right side
    47,411.78x = 878,451,219.64
  5. Step 5: Solve for x
    x = 878,451,219.64/47,411.78
  6. Step 6: Final answer
    x = 18,528.12

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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.