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Finding the Fourth Proportional to 103,317.48, 154,976.22 and 40,987.98

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Solution

The fourth proportional to 103,317.48, 154,976.22 and 40,987.98 is: 61,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,317.48 : 154,976.22 = 40,987.98 : x
  2. Step 2: Convert to fraction form
    103,317.48/154,976.22 = 40,987.98/x
  3. Step 3: Cross multiply
    103,317.48x = 154,976.22 × 40,987.98
  4. Step 4: Simplify right side
    103,317.48x = 6,352,162,205.84
  5. Step 5: Solve for x
    x = 6,352,162,205.84/103,317.48
  6. Step 6: Final answer
    x = 61,481.97

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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.