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Finding the Fourth Proportional to 81,339.58, 122,005.80 and 22,175.26

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Solution

The fourth proportional to 81,339.58, 122,005.80 and 22,175.26 is: 33,261.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.58 : 122,005.80 = 22,175.26 : x
  2. Step 2: Convert to fraction form
    81,339.58/122,005.80 = 22,175.26/x
  3. Step 3: Cross multiply
    81,339.58x = 122,005.80 × 22,175.26
  4. Step 4: Simplify right side
    81,339.58x = 2,705,510,336.51
  5. Step 5: Solve for x
    x = 2,705,510,336.51/81,339.58
  6. Step 6: Final answer
    x = 33,261.92

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1.5x scale

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.