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Finding the Fourth Proportional to 45,007.82, 67,512.34 and 42,268

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Solution

The fourth proportional to 45,007.82, 67,512.34 and 42,268 is: 63,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,007.82 : 67,512.34 = 42,268 : x
  2. Step 2: Convert to fraction form
    45,007.82/67,512.34 = 42,268/x
  3. Step 3: Cross multiply
    45,007.82x = 67,512.34 × 42,268
  4. Step 4: Simplify right side
    45,007.82x = 2,853,611,587.12
  5. Step 5: Solve for x
    x = 2,853,611,587.12/45,007.82
  6. Step 6: Final answer
    x = 63,402.57

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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.