Home / 84,836.80-117,078.38-47,111

Finding the Fourth Proportional to 84,836.80, 117,078.38 and 47,111

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Solution

The fourth proportional to 84,836.80, 117,078.38 and 47,111 is: 65,015.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,836.80 : 117,078.38 = 47,111 : x
  2. Step 2: Convert to fraction form
    84,836.80/117,078.38 = 47,111/x
  3. Step 3: Cross multiply
    84,836.80x = 117,078.38 × 47,111
  4. Step 4: Simplify right side
    84,836.80x = 5,515,679,560.18
  5. Step 5: Solve for x
    x = 5,515,679,560.18/84,836.80
  6. Step 6: Final answer
    x = 65,015.18

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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.