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Finding the Fourth Proportional to 55,636.64, 83,463.60 and 18,692

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Solution

The fourth proportional to 55,636.64, 83,463.60 and 18,692 is: 28,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,636.64 : 83,463.60 = 18,692 : x
  2. Step 2: Convert to fraction form
    55,636.64/83,463.60 = 18,692/x
  3. Step 3: Cross multiply
    55,636.64x = 83,463.60 × 18,692
  4. Step 4: Simplify right side
    55,636.64x = 1,560,101,611.20
  5. Step 5: Solve for x
    x = 1,560,101,611.20/55,636.64
  6. Step 6: Final answer
    x = 28,040.90

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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.