Home / 78,724.75-118,074.96-28,793.17

Finding the Fourth Proportional to 78,724.75, 118,074.96 and 28,793.17

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Solution

The fourth proportional to 78,724.75, 118,074.96 and 28,793.17 is: 43,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.75 : 118,074.96 = 28,793.17 : x
  2. Step 2: Convert to fraction form
    78,724.75/118,074.96 = 28,793.17/x
  3. Step 3: Cross multiply
    78,724.75x = 118,074.96 × 28,793.17
  4. Step 4: Simplify right side
    78,724.75x = 3,399,752,784.82
  5. Step 5: Solve for x
    x = 3,399,752,784.82/78,724.75
  6. Step 6: Final answer
    x = 43,185.31

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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.