Home / 78,280.19-117,427.43-22,121.11

Finding the Fourth Proportional to 78,280.19, 117,427.43 and 22,121.11

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Solution

The fourth proportional to 78,280.19, 117,427.43 and 22,121.11 is: 33,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.19 : 117,427.43 = 22,121.11 : x
  2. Step 2: Convert to fraction form
    78,280.19/117,427.43 = 22,121.11/x
  3. Step 3: Cross multiply
    78,280.19x = 117,427.43 × 22,121.11
  4. Step 4: Simplify right side
    78,280.19x = 2,597,624,985.44
  5. Step 5: Solve for x
    x = 2,597,624,985.44/78,280.19
  6. Step 6: Final answer
    x = 33,183.68

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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.