Home / 77,940.66-116,845.38-31,168.02

Finding the Fourth Proportional to 77,940.66, 116,845.38 and 31,168.02

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Solution

The fourth proportional to 77,940.66, 116,845.38 and 31,168.02 is: 46,725.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,940.66 : 116,845.38 = 31,168.02 : x
  2. Step 2: Convert to fraction form
    77,940.66/116,845.38 = 31,168.02/x
  3. Step 3: Cross multiply
    77,940.66x = 116,845.38 × 31,168.02
  4. Step 4: Simplify right side
    77,940.66x = 3,641,839,140.75
  5. Step 5: Solve for x
    x = 3,641,839,140.75/77,940.66
  6. Step 6: Final answer
    x = 46,725.79

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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.