Home / 78,072.66-117,225.63-76,906.26

Finding the Fourth Proportional to 78,072.66, 117,225.63 and 76,906.26

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Solution

The fourth proportional to 78,072.66, 117,225.63 and 76,906.26 is: 115,474.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,072.66 : 117,225.63 = 76,906.26 : x
  2. Step 2: Convert to fraction form
    78,072.66/117,225.63 = 76,906.26/x
  3. Step 3: Cross multiply
    78,072.66x = 117,225.63 × 76,906.26
  4. Step 4: Simplify right side
    78,072.66x = 9,015,384,779.44
  5. Step 5: Solve for x
    x = 9,015,384,779.44/78,072.66
  6. Step 6: Final answer
    x = 115,474.29

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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.