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Finding the Fourth Proportional to 55,590, 83,393.64 and 18,662.64

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Solution

The fourth proportional to 55,590, 83,393.64 and 18,662.64 is: 27,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,590 : 83,393.64 = 18,662.64 : x
  2. Step 2: Convert to fraction form
    55,590/83,393.64 = 18,662.64/x
  3. Step 3: Cross multiply
    55,590x = 83,393.64 × 18,662.64
  4. Step 4: Simplify right side
    55,590x = 1,556,345,481.61
  5. Step 5: Solve for x
    x = 1,556,345,481.61/55,590
  6. Step 6: Final answer
    x = 27,996.86

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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.