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Finding the Fourth Proportional to 65,930.10, 98,907.88 and 21,544.88

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Solution

The fourth proportional to 65,930.10, 98,907.88 and 21,544.88 is: 32,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,930.10 : 98,907.88 = 21,544.88 : x
  2. Step 2: Convert to fraction form
    65,930.10/98,907.88 = 21,544.88/x
  3. Step 3: Cross multiply
    65,930.10x = 98,907.88 × 21,544.88
  4. Step 4: Simplify right side
    65,930.10x = 2,130,958,405.65
  5. Step 5: Solve for x
    x = 2,130,958,405.65/65,930.10
  6. Step 6: Final answer
    x = 32,321.48

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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.