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Finding the Fourth Proportional to 78,883.47, 118,231.56 and 45,534.54

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Solution

The fourth proportional to 78,883.47, 118,231.56 and 45,534.54 is: 68,247.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883.47 : 118,231.56 = 45,534.54 : x
  2. Step 2: Convert to fraction form
    78,883.47/118,231.56 = 45,534.54/x
  3. Step 3: Cross multiply
    78,883.47x = 118,231.56 × 45,534.54
  4. Step 4: Simplify right side
    78,883.47x = 5,383,619,698.08
  5. Step 5: Solve for x
    x = 5,383,619,698.08/78,883.47
  6. Step 6: Final answer
    x = 68,247.75

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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.