Home / 77,989.42-107,626.08-49,694.50

Finding the Fourth Proportional to 77,989.42, 107,626.08 and 49,694.50

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Solution

The fourth proportional to 77,989.42, 107,626.08 and 49,694.50 is: 68,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,989.42 : 107,626.08 = 49,694.50 : x
  2. Step 2: Convert to fraction form
    77,989.42/107,626.08 = 49,694.50/x
  3. Step 3: Cross multiply
    77,989.42x = 107,626.08 × 49,694.50
  4. Step 4: Simplify right side
    77,989.42x = 5,348,424,232.56
  5. Step 5: Solve for x
    x = 5,348,424,232.56/77,989.42
  6. Step 6: Final answer
    x = 68,578.84

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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.