Home / 80,815.82-121,090.06-41,318.60

Finding the Fourth Proportional to 80,815.82, 121,090.06 and 41,318.60

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Solution

The fourth proportional to 80,815.82, 121,090.06 and 41,318.60 is: 61,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,815.82 : 121,090.06 = 41,318.60 : x
  2. Step 2: Convert to fraction form
    80,815.82/121,090.06 = 41,318.60/x
  3. Step 3: Cross multiply
    80,815.82x = 121,090.06 × 41,318.60
  4. Step 4: Simplify right side
    80,815.82x = 5,003,271,753.12
  5. Step 5: Solve for x
    x = 5,003,271,753.12/80,815.82
  6. Step 6: Final answer
    x = 61,909.56

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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.