Home / 78,975.62-108,986.16-43,165.88

Finding the Fourth Proportional to 78,975.62, 108,986.16 and 43,165.88

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Solution

The fourth proportional to 78,975.62, 108,986.16 and 43,165.88 is: 59,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.62 : 108,986.16 = 43,165.88 : x
  2. Step 2: Convert to fraction form
    78,975.62/108,986.16 = 43,165.88/x
  3. Step 3: Cross multiply
    78,975.62x = 108,986.16 × 43,165.88
  4. Step 4: Simplify right side
    78,975.62x = 4,704,483,504.22
  5. Step 5: Solve for x
    x = 4,704,483,504.22/78,975.62
  6. Step 6: Final answer
    x = 59,568.81

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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.