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Finding the Fourth Proportional to 65,723.66, 98,608.43 and 20,751.99

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Solution

The fourth proportional to 65,723.66, 98,608.43 and 20,751.99 is: 31,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,723.66 : 98,608.43 = 20,751.99 : x
  2. Step 2: Convert to fraction form
    65,723.66/98,608.43 = 20,751.99/x
  3. Step 3: Cross multiply
    65,723.66x = 98,608.43 × 20,751.99
  4. Step 4: Simplify right side
    65,723.66x = 2,046,320,660.23
  5. Step 5: Solve for x
    x = 2,046,320,660.23/65,723.66
  6. Step 6: Final answer
    x = 31,135.22

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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.