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Finding the Fourth Proportional to 103,290.48, 154,935.75 and 33,219

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Solution

The fourth proportional to 103,290.48, 154,935.75 and 33,219 is: 49,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,290.48 : 154,935.75 = 33,219 : x
  2. Step 2: Convert to fraction form
    103,290.48/154,935.75 = 33,219/x
  3. Step 3: Cross multiply
    103,290.48x = 154,935.75 × 33,219
  4. Step 4: Simplify right side
    103,290.48x = 5,146,810,679.25
  5. Step 5: Solve for x
    x = 5,146,810,679.25/103,290.48
  6. Step 6: Final answer
    x = 49,828.51

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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.