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Finding the Fourth Proportional to 67,893.12, 101,850.96 and 28,453.20

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Solution

The fourth proportional to 67,893.12, 101,850.96 and 28,453.20 is: 42,684.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,893.12 : 101,850.96 = 28,453.20 : x
  2. Step 2: Convert to fraction form
    67,893.12/101,850.96 = 28,453.20/x
  3. Step 3: Cross multiply
    67,893.12x = 101,850.96 × 28,453.20
  4. Step 4: Simplify right side
    67,893.12x = 2,897,985,735.07
  5. Step 5: Solve for x
    x = 2,897,985,735.07/67,893.12
  6. Step 6: Final answer
    x = 42,684.53

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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.