Home / 84,855.80-117,122.05-49,040.64

Finding the Fourth Proportional to 84,855.80, 117,122.05 and 49,040.64

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Solution

The fourth proportional to 84,855.80, 117,122.05 and 49,040.64 is: 67,688.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,855.80 : 117,122.05 = 49,040.64 : x
  2. Step 2: Convert to fraction form
    84,855.80/117,122.05 = 49,040.64/x
  3. Step 3: Cross multiply
    84,855.80x = 117,122.05 × 49,040.64
  4. Step 4: Simplify right side
    84,855.80x = 5,743,740,351.41
  5. Step 5: Solve for x
    x = 5,743,740,351.41/84,855.80
  6. Step 6: Final answer
    x = 67,688.25

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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.