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Finding the Fourth Proportional to 65,891.10, 98,800.20 and 26,403.60

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Solution

The fourth proportional to 65,891.10, 98,800.20 and 26,403.60 is: 39,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,891.10 : 98,800.20 = 26,403.60 : x
  2. Step 2: Convert to fraction form
    65,891.10/98,800.20 = 26,403.60/x
  3. Step 3: Cross multiply
    65,891.10x = 98,800.20 × 26,403.60
  4. Step 4: Simplify right side
    65,891.10x = 2,608,680,960.72
  5. Step 5: Solve for x
    x = 2,608,680,960.72/65,891.10
  6. Step 6: Final answer
    x = 39,590.79

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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.