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Finding the Fourth Proportional to 81,879.23, 122,848.88 and 34,506.25

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Solution

The fourth proportional to 81,879.23, 122,848.88 and 34,506.25 is: 51,772.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,879.23 : 122,848.88 = 34,506.25 : x
  2. Step 2: Convert to fraction form
    81,879.23/122,848.88 = 34,506.25/x
  3. Step 3: Cross multiply
    81,879.23x = 122,848.88 × 34,506.25
  4. Step 4: Simplify right side
    81,879.23x = 4,239,054,165.50
  5. Step 5: Solve for x
    x = 4,239,054,165.50/81,879.23
  6. Step 6: Final answer
    x = 51,772.03

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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.