Home / 78,908.26-118,292.04-28,976.92

Finding the Fourth Proportional to 78,908.26, 118,292.04 and 28,976.92

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Solution

The fourth proportional to 78,908.26, 118,292.04 and 28,976.92 is: 43,439.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,908.26 : 118,292.04 = 28,976.92 : x
  2. Step 2: Convert to fraction form
    78,908.26/118,292.04 = 28,976.92/x
  3. Step 3: Cross multiply
    78,908.26x = 118,292.04 × 28,976.92
  4. Step 4: Simplify right side
    78,908.26x = 3,427,738,979.72
  5. Step 5: Solve for x
    x = 3,427,738,979.72/78,908.26
  6. Step 6: Final answer
    x = 43,439.55

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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.