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Finding the Fourth Proportional to 67,263, 100,645.39 and 42,102.60

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Solution

The fourth proportional to 67,263, 100,645.39 and 42,102.60 is: 62,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,263 : 100,645.39 = 42,102.60 : x
  2. Step 2: Convert to fraction form
    67,263/100,645.39 = 42,102.60/x
  3. Step 3: Cross multiply
    67,263x = 100,645.39 × 42,102.60
  4. Step 4: Simplify right side
    67,263x = 4,237,432,597.01
  5. Step 5: Solve for x
    x = 4,237,432,597.01/67,263
  6. Step 6: Final answer
    x = 62,997.97

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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.