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Finding the Fourth Proportional to 65,376.78, 98,081.64 and 18,629.52

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Solution

The fourth proportional to 65,376.78, 98,081.64 and 18,629.52 is: 27,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,376.78 : 98,081.64 = 18,629.52 : x
  2. Step 2: Convert to fraction form
    65,376.78/98,081.64 = 18,629.52/x
  3. Step 3: Cross multiply
    65,376.78x = 98,081.64 × 18,629.52
  4. Step 4: Simplify right side
    65,376.78x = 1,827,213,874.01
  5. Step 5: Solve for x
    x = 1,827,213,874.01/65,376.78
  6. Step 6: Final answer
    x = 27,948.97

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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.