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Finding the Fourth Proportional to 53,970.44, 80,906.66 and 18,890.96

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Solution

The fourth proportional to 53,970.44, 80,906.66 and 18,890.96 is: 28,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,970.44 : 80,906.66 = 18,890.96 : x
  2. Step 2: Convert to fraction form
    53,970.44/80,906.66 = 18,890.96/x
  3. Step 3: Cross multiply
    53,970.44x = 80,906.66 × 18,890.96
  4. Step 4: Simplify right side
    53,970.44x = 1,528,404,383.34
  5. Step 5: Solve for x
    x = 1,528,404,383.34/53,970.44
  6. Step 6: Final answer
    x = 28,319.29

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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.