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Finding the Fourth Proportional to 103,628, 155,442 and 33,507.32

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Solution

The fourth proportional to 103,628, 155,442 and 33,507.32 is: 50,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628 : 155,442 = 33,507.32 : x
  2. Step 2: Convert to fraction form
    103,628/155,442 = 33,507.32/x
  3. Step 3: Cross multiply
    103,628x = 155,442 × 33,507.32
  4. Step 4: Simplify right side
    103,628x = 5,208,444,835.44
  5. Step 5: Solve for x
    x = 5,208,444,835.44/103,628
  6. Step 6: Final answer
    x = 50,260.98

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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.