Home / 76,940.38-115,106.91-58,274.20

Finding the Fourth Proportional to 76,940.38, 115,106.91 and 58,274.20

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Solution

The fourth proportional to 76,940.38, 115,106.91 and 58,274.20 is: 87,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,940.38 : 115,106.91 = 58,274.20 : x
  2. Step 2: Convert to fraction form
    76,940.38/115,106.91 = 58,274.20/x
  3. Step 3: Cross multiply
    76,940.38x = 115,106.91 × 58,274.20
  4. Step 4: Simplify right side
    76,940.38x = 6,707,763,094.72
  5. Step 5: Solve for x
    x = 6,707,763,094.72/76,940.38
  6. Step 6: Final answer
    x = 87,181.31

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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.