Home / 78,971.53-108,982.46-43,163.86

Finding the Fourth Proportional to 78,971.53, 108,982.46 and 43,163.86

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Solution

The fourth proportional to 78,971.53, 108,982.46 and 43,163.86 is: 59,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,971.53 : 108,982.46 = 43,163.86 : x
  2. Step 2: Convert to fraction form
    78,971.53/108,982.46 = 43,163.86/x
  3. Step 3: Cross multiply
    78,971.53x = 108,982.46 × 43,163.86
  4. Step 4: Simplify right side
    78,971.53x = 4,704,103,645.90
  5. Step 5: Solve for x
    x = 4,704,103,645.90/78,971.53
  6. Step 6: Final answer
    x = 59,567.08

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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.