Home / 68,270.40-102,405.60-57,772.80

Finding the Fourth Proportional to 68,270.40, 102,405.60 and 57,772.80

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Solution

The fourth proportional to 68,270.40, 102,405.60 and 57,772.80 is: 86,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,270.40 : 102,405.60 = 57,772.80 : x
  2. Step 2: Convert to fraction form
    68,270.40/102,405.60 = 57,772.80/x
  3. Step 3: Cross multiply
    68,270.40x = 102,405.60 × 57,772.80
  4. Step 4: Simplify right side
    68,270.40x = 5,916,258,247.68
  5. Step 5: Solve for x
    x = 5,916,258,247.68/68,270.40
  6. Step 6: Final answer
    x = 86,659.20

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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.