Home / 47,790.78-71,671.60-12,725.88

Finding the Fourth Proportional to 47,790.78, 71,671.60 and 12,725.88

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Solution

The fourth proportional to 47,790.78, 71,671.60 and 12,725.88 is: 19,084.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,790.78 : 71,671.60 = 12,725.88 : x
  2. Step 2: Convert to fraction form
    47,790.78/71,671.60 = 12,725.88/x
  3. Step 3: Cross multiply
    47,790.78x = 71,671.60 × 12,725.88
  4. Step 4: Simplify right side
    47,790.78x = 912,084,181.01
  5. Step 5: Solve for x
    x = 912,084,181.01/47,790.78
  6. Step 6: Final answer
    x = 19,084.94

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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.