Home / 78,214.54-107,907.78-51,371.60

Finding the Fourth Proportional to 78,214.54, 107,907.78 and 51,371.60

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Solution

The fourth proportional to 78,214.54, 107,907.78 and 51,371.60 is: 70,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.54 : 107,907.78 = 51,371.60 : x
  2. Step 2: Convert to fraction form
    78,214.54/107,907.78 = 51,371.60/x
  3. Step 3: Cross multiply
    78,214.54x = 107,907.78 × 51,371.60
  4. Step 4: Simplify right side
    78,214.54x = 5,543,395,311.05
  5. Step 5: Solve for x
    x = 5,543,395,311.05/78,214.54
  6. Step 6: Final answer
    x = 70,874.23

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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.