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Finding the Fourth Proportional to 65,394.96, 98,081.46 and 18,636.72

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Solution

The fourth proportional to 65,394.96, 98,081.46 and 18,636.72 is: 27,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,394.96 : 98,081.46 = 18,636.72 : x
  2. Step 2: Convert to fraction form
    65,394.96/98,081.46 = 18,636.72/x
  3. Step 3: Cross multiply
    65,394.96x = 98,081.46 × 18,636.72
  4. Step 4: Simplify right side
    65,394.96x = 1,827,916,707.21
  5. Step 5: Solve for x
    x = 1,827,916,707.21/65,394.96
  6. Step 6: Final answer
    x = 27,951.95

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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.