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Finding the Fourth Proportional to 65,475.74, 98,213.60 and 18,728.61

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Solution

The fourth proportional to 65,475.74, 98,213.60 and 18,728.61 is: 28,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,475.74 : 98,213.60 = 18,728.61 : x
  2. Step 2: Convert to fraction form
    65,475.74/98,213.60 = 18,728.61/x
  3. Step 3: Cross multiply
    65,475.74x = 98,213.60 × 18,728.61
  4. Step 4: Simplify right side
    65,475.74x = 1,839,404,211.10
  5. Step 5: Solve for x
    x = 1,839,404,211.10/65,475.74
  6. Step 6: Final answer
    x = 28,092.91

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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.