Home / 77,986.31-107,571.57-51,130.56

Finding the Fourth Proportional to 77,986.31, 107,571.57 and 51,130.56

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Solution

The fourth proportional to 77,986.31, 107,571.57 and 51,130.56 is: 70,527.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,986.31 : 107,571.57 = 51,130.56 : x
  2. Step 2: Convert to fraction form
    77,986.31/107,571.57 = 51,130.56/x
  3. Step 3: Cross multiply
    77,986.31x = 107,571.57 × 51,130.56
  4. Step 4: Simplify right side
    77,986.31x = 5,500,194,614.18
  5. Step 5: Solve for x
    x = 5,500,194,614.18/77,986.31
  6. Step 6: Final answer
    x = 70,527.69

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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.