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Finding the Fourth Proportional to 67,559, 101,338.86 and 18,311

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Solution

The fourth proportional to 67,559, 101,338.86 and 18,311 is: 27,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,559 : 101,338.86 = 18,311 : x
  2. Step 2: Convert to fraction form
    67,559/101,338.86 = 18,311/x
  3. Step 3: Cross multiply
    67,559x = 101,338.86 × 18,311
  4. Step 4: Simplify right side
    67,559x = 1,855,615,865.46
  5. Step 5: Solve for x
    x = 1,855,615,865.46/67,559
  6. Step 6: Final answer
    x = 27,466.60

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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.