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Finding the Fourth Proportional to 74,544, 111,816 and 19,140

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Solution

The fourth proportional to 74,544, 111,816 and 19,140 is: 28,710

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,544 : 111,816 = 19,140 : x
  2. Step 2: Convert to fraction form
    74,544/111,816 = 19,140/x
  3. Step 3: Cross multiply
    74,544x = 111,816 × 19,140
  4. Step 4: Simplify right side
    74,544x = 2,140,158,240
  5. Step 5: Solve for x
    x = 2,140,158,240/74,544
  6. Step 6: Final answer
    x = 28,710

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.