Home / 54,731.10-82,129.05-39,902.70

Finding the Fourth Proportional to 54,731.10, 82,129.05 and 39,902.70

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Solution

The fourth proportional to 54,731.10, 82,129.05 and 39,902.70 is: 59,877.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,731.10 : 82,129.05 = 39,902.70 : x
  2. Step 2: Convert to fraction form
    54,731.10/82,129.05 = 39,902.70/x
  3. Step 3: Cross multiply
    54,731.10x = 82,129.05 × 39,902.70
  4. Step 4: Simplify right side
    54,731.10x = 3,277,170,843.44
  5. Step 5: Solve for x
    x = 3,277,170,843.44/54,731.10
  6. Step 6: Final answer
    x = 59,877.67

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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.