Home / 72,839.72-100,523.91-40,576.91

Finding the Fourth Proportional to 72,839.72, 100,523.91 and 40,576.91

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Solution

The fourth proportional to 72,839.72, 100,523.91 and 40,576.91 is: 55,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839.72 : 100,523.91 = 40,576.91 : x
  2. Step 2: Convert to fraction form
    72,839.72/100,523.91 = 40,576.91/x
  3. Step 3: Cross multiply
    72,839.72x = 100,523.91 × 40,576.91
  4. Step 4: Simplify right side
    72,839.72x = 4,078,949,648.92
  5. Step 5: Solve for x
    x = 4,078,949,648.92/72,839.72
  6. Step 6: Final answer
    x = 55,998.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.