Home / 78,694.36-107,987.27-71,566.36

Finding the Fourth Proportional to 78,694.36, 107,987.27 and 71,566.36

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Solution

The fourth proportional to 78,694.36, 107,987.27 and 71,566.36 is: 98,205.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,694.36 : 107,987.27 = 71,566.36 : x
  2. Step 2: Convert to fraction form
    78,694.36/107,987.27 = 71,566.36/x
  3. Step 3: Cross multiply
    78,694.36x = 107,987.27 × 71,566.36
  4. Step 4: Simplify right side
    78,694.36x = 7,728,255,840.24
  5. Step 5: Solve for x
    x = 7,728,255,840.24/78,694.36
  6. Step 6: Final answer
    x = 98,205.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.