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Finding the Fourth Proportional to 32,868, 45,357.84 and 21,112.48

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Solution

The fourth proportional to 32,868, 45,357.84 and 21,112.48 is: 29,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,868 : 45,357.84 = 21,112.48 : x
  2. Step 2: Convert to fraction form
    32,868/45,357.84 = 21,112.48/x
  3. Step 3: Cross multiply
    32,868x = 45,357.84 × 21,112.48
  4. Step 4: Simplify right side
    32,868x = 957,616,489.84
  5. Step 5: Solve for x
    x = 957,616,489.84/32,868
  6. Step 6: Final answer
    x = 29,135.22

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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.