Home / 80,663.36-120,992.28-30,741.64

Finding the Fourth Proportional to 80,663.36, 120,992.28 and 30,741.64

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Solution

The fourth proportional to 80,663.36, 120,992.28 and 30,741.64 is: 46,111.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,663.36 : 120,992.28 = 30,741.64 : x
  2. Step 2: Convert to fraction form
    80,663.36/120,992.28 = 30,741.64/x
  3. Step 3: Cross multiply
    80,663.36x = 120,992.28 × 30,741.64
  4. Step 4: Simplify right side
    80,663.36x = 3,719,501,114.54
  5. Step 5: Solve for x
    x = 3,719,501,114.54/80,663.36
  6. Step 6: Final answer
    x = 46,111.41

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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.