Home / 86,301.45-118,891.80-82,315.44

Finding the Fourth Proportional to 86,301.45, 118,891.80 and 82,315.44

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Solution

The fourth proportional to 86,301.45, 118,891.80 and 82,315.44 is: 113,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,301.45 : 118,891.80 = 82,315.44 : x
  2. Step 2: Convert to fraction form
    86,301.45/118,891.80 = 82,315.44/x
  3. Step 3: Cross multiply
    86,301.45x = 118,891.80 × 82,315.44
  4. Step 4: Simplify right side
    86,301.45x = 9,786,630,829.39
  5. Step 5: Solve for x
    x = 9,786,630,829.39/86,301.45
  6. Step 6: Final answer
    x = 113,400.54

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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.