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Finding the Fourth Proportional to 128,476.44, 192,603.92 and 49,645.98

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Solution

The fourth proportional to 128,476.44, 192,603.92 and 49,645.98 is: 74,426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,476.44 : 192,603.92 = 49,645.98 : x
  2. Step 2: Convert to fraction form
    128,476.44/192,603.92 = 49,645.98/x
  3. Step 3: Cross multiply
    128,476.44x = 192,603.92 × 49,645.98
  4. Step 4: Simplify right side
    128,476.44x = 9,562,010,112.01
  5. Step 5: Solve for x
    x = 9,562,010,112.01/128,476.44
  6. Step 6: Final answer
    x = 74,426.18

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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.