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Finding the Fourth Proportional to 84,878, 117,142.44 and 51,344.24

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Solution

The fourth proportional to 84,878, 117,142.44 and 51,344.24 is: 70,861.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,878 : 117,142.44 = 51,344.24 : x
  2. Step 2: Convert to fraction form
    84,878/117,142.44 = 51,344.24/x
  3. Step 3: Cross multiply
    84,878x = 117,142.44 × 51,344.24
  4. Step 4: Simplify right side
    84,878x = 6,014,589,553.55
  5. Step 5: Solve for x
    x = 6,014,589,553.55/84,878
  6. Step 6: Final answer
    x = 70,861.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.