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Finding the Fourth Proportional to 65,992.41, 98,967.76 and 21,608.96

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Solution

The fourth proportional to 65,992.41, 98,967.76 and 21,608.96 is: 32,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,992.41 : 98,967.76 = 21,608.96 : x
  2. Step 2: Convert to fraction form
    65,992.41/98,967.76 = 21,608.96/x
  3. Step 3: Cross multiply
    65,992.41x = 98,967.76 × 21,608.96
  4. Step 4: Simplify right side
    65,992.41x = 2,138,589,818.27
  5. Step 5: Solve for x
    x = 2,138,589,818.27/65,992.41
  6. Step 6: Final answer
    x = 32,406.60

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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.