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Finding the Fourth Proportional to 72.37, 99.86 and 44.74

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Solution

The fourth proportional to 72.37, 99.86 and 44.74 is: 61.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.37 : 99.86 = 44.74 : x
  2. Step 2: Convert to fraction form
    72.37/99.86 = 44.74/x
  3. Step 3: Cross multiply
    72.37x = 99.86 × 44.74
  4. Step 4: Simplify right side
    72.37x = 4,467.26
  5. Step 5: Solve for x
    x = 4,467.26/72.37
  6. Step 6: Final answer
    x = 61.73

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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.