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Finding the Fourth Proportional to 69,080.64, 95,259.96 and 65,061.60

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Solution

The fourth proportional to 69,080.64, 95,259.96 and 65,061.60 is: 89,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,080.64 : 95,259.96 = 65,061.60 : x
  2. Step 2: Convert to fraction form
    69,080.64/95,259.96 = 65,061.60/x
  3. Step 3: Cross multiply
    69,080.64x = 95,259.96 × 65,061.60
  4. Step 4: Simplify right side
    69,080.64x = 6,197,765,413.54
  5. Step 5: Solve for x
    x = 6,197,765,413.54/69,080.64
  6. Step 6: Final answer
    x = 89,717.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.