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Finding the Fourth Proportional to 67,511.97, 101,269.58 and 20,765.25

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Solution

The fourth proportional to 67,511.97, 101,269.58 and 20,765.25 is: 31,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,511.97 : 101,269.58 = 20,765.25 : x
  2. Step 2: Convert to fraction form
    67,511.97/101,269.58 = 20,765.25/x
  3. Step 3: Cross multiply
    67,511.97x = 101,269.58 × 20,765.25
  4. Step 4: Simplify right side
    67,511.97x = 2,102,888,146.10
  5. Step 5: Solve for x
    x = 2,102,888,146.10/67,511.97
  6. Step 6: Final answer
    x = 31,148.37

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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.