Home / 77,968.35-107,608.44-51,188.55

Finding the Fourth Proportional to 77,968.35, 107,608.44 and 51,188.55

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Solution

The fourth proportional to 77,968.35, 107,608.44 and 51,188.55 is: 70,648.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,968.35 : 107,608.44 = 51,188.55 : x
  2. Step 2: Convert to fraction form
    77,968.35/107,608.44 = 51,188.55/x
  3. Step 3: Cross multiply
    77,968.35x = 107,608.44 × 51,188.55
  4. Step 4: Simplify right side
    77,968.35x = 5,508,320,011.36
  5. Step 5: Solve for x
    x = 5,508,320,011.36/77,968.35
  6. Step 6: Final answer
    x = 70,648.15

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1.5x scale

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.