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Finding the Fourth Proportional to 72,048.97, 108,073.32 and 40,048.39

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Solution

The fourth proportional to 72,048.97, 108,073.32 and 40,048.39 is: 60,072.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,048.97 : 108,073.32 = 40,048.39 : x
  2. Step 2: Convert to fraction form
    72,048.97/108,073.32 = 40,048.39/x
  3. Step 3: Cross multiply
    72,048.97x = 108,073.32 × 40,048.39
  4. Step 4: Simplify right side
    72,048.97x = 4,328,162,467.95
  5. Step 5: Solve for x
    x = 4,328,162,467.95/72,048.97
  6. Step 6: Final answer
    x = 60,072.51

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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.