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Finding the Fourth Proportional to 72,393.72, 108,523.32 and 28,049.44

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Solution

The fourth proportional to 72,393.72, 108,523.32 and 28,049.44 is: 42,048.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,393.72 : 108,523.32 = 28,049.44 : x
  2. Step 2: Convert to fraction form
    72,393.72/108,523.32 = 28,049.44/x
  3. Step 3: Cross multiply
    72,393.72x = 108,523.32 × 28,049.44
  4. Step 4: Simplify right side
    72,393.72x = 3,044,018,352.94
  5. Step 5: Solve for x
    x = 3,044,018,352.94/72,393.72
  6. Step 6: Final answer
    x = 42,048.10

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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.