Home / 86,268.80-129,359.44-39,481.60

Finding the Fourth Proportional to 86,268.80, 129,359.44 and 39,481.60

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Solution

The fourth proportional to 86,268.80, 129,359.44 and 39,481.60 is: 59,202.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,268.80 : 129,359.44 = 39,481.60 : x
  2. Step 2: Convert to fraction form
    86,268.80/129,359.44 = 39,481.60/x
  3. Step 3: Cross multiply
    86,268.80x = 129,359.44 × 39,481.60
  4. Step 4: Simplify right side
    86,268.80x = 5,107,317,666.30
  5. Step 5: Solve for x
    x = 5,107,317,666.30/86,268.80
  6. Step 6: Final answer
    x = 59,202.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.