Home / 77,960.42-107,634.57-54,078.74

Finding the Fourth Proportional to 77,960.42, 107,634.57 and 54,078.74

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Solution

The fourth proportional to 77,960.42, 107,634.57 and 54,078.74 is: 74,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.42 : 107,634.57 = 54,078.74 : x
  2. Step 2: Convert to fraction form
    77,960.42/107,634.57 = 54,078.74/x
  3. Step 3: Cross multiply
    77,960.42x = 107,634.57 × 54,078.74
  4. Step 4: Simplify right side
    77,960.42x = 5,820,741,926.04
  5. Step 5: Solve for x
    x = 5,820,741,926.04/77,960.42
  6. Step 6: Final answer
    x = 74,662.78

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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.