Home / 78,738.56-118,164-43,706.24

Finding the Fourth Proportional to 78,738.56, 118,164 and 43,706.24

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Solution

The fourth proportional to 78,738.56, 118,164 and 43,706.24 is: 65,590.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738.56 : 118,164 = 43,706.24 : x
  2. Step 2: Convert to fraction form
    78,738.56/118,164 = 43,706.24/x
  3. Step 3: Cross multiply
    78,738.56x = 118,164 × 43,706.24
  4. Step 4: Simplify right side
    78,738.56x = 5,164,504,143.36
  5. Step 5: Solve for x
    x = 5,164,504,143.36/78,738.56
  6. Step 6: Final answer
    x = 65,590.53

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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.