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Finding the Fourth Proportional to 55,219.64, 82,754.90 and 39,603

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Solution

The fourth proportional to 55,219.64, 82,754.90 and 39,603 is: 59,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,219.64 : 82,754.90 = 39,603 : x
  2. Step 2: Convert to fraction form
    55,219.64/82,754.90 = 39,603/x
  3. Step 3: Cross multiply
    55,219.64x = 82,754.90 × 39,603
  4. Step 4: Simplify right side
    55,219.64x = 3,277,342,304.70
  5. Step 5: Solve for x
    x = 3,277,342,304.70/55,219.64
  6. Step 6: Final answer
    x = 59,351.03

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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.