Home / 77,968.35-107,608.46-51,188.54

Finding the Fourth Proportional to 77,968.35, 107,608.46 and 51,188.54

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Solution

The fourth proportional to 77,968.35, 107,608.46 and 51,188.54 is: 70,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,968.35 : 107,608.46 = 51,188.54 : x
  2. Step 2: Convert to fraction form
    77,968.35/107,608.46 = 51,188.54/x
  3. Step 3: Cross multiply
    77,968.35x = 107,608.46 × 51,188.54
  4. Step 4: Simplify right side
    77,968.35x = 5,508,319,165.06
  5. Step 5: Solve for x
    x = 5,508,319,165.06/77,968.35
  6. Step 6: Final answer
    x = 70,648.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.