Home / 78,096.12-117,152.04-21,936.36

Finding the Fourth Proportional to 78,096.12, 117,152.04 and 21,936.36

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Solution

The fourth proportional to 78,096.12, 117,152.04 and 21,936.36 is: 32,906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,096.12 : 117,152.04 = 21,936.36 : x
  2. Step 2: Convert to fraction form
    78,096.12/117,152.04 = 21,936.36/x
  3. Step 3: Cross multiply
    78,096.12x = 117,152.04 × 21,936.36
  4. Step 4: Simplify right side
    78,096.12x = 2,569,889,324.17
  5. Step 5: Solve for x
    x = 2,569,889,324.17/78,096.12
  6. Step 6: Final answer
    x = 32,906.75

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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.