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Finding the Fourth Proportional to 66,936.96, 100,345.78 and 25,413.12

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Solution

The fourth proportional to 66,936.96, 100,345.78 and 25,413.12 is: 38,097.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936.96 : 100,345.78 = 25,413.12 : x
  2. Step 2: Convert to fraction form
    66,936.96/100,345.78 = 25,413.12/x
  3. Step 3: Cross multiply
    66,936.96x = 100,345.78 × 25,413.12
  4. Step 4: Simplify right side
    66,936.96x = 2,550,099,348.63
  5. Step 5: Solve for x
    x = 2,550,099,348.63/66,936.96
  6. Step 6: Final answer
    x = 38,097.03

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1.5x scale

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.