Home / 75,431.13-113,161.27-28,680.36

Finding the Fourth Proportional to 75,431.13, 113,161.27 and 28,680.36

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Solution

The fourth proportional to 75,431.13, 113,161.27 and 28,680.36 is: 43,026.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,431.13 : 113,161.27 = 28,680.36 : x
  2. Step 2: Convert to fraction form
    75,431.13/113,161.27 = 28,680.36/x
  3. Step 3: Cross multiply
    75,431.13x = 113,161.27 × 28,680.36
  4. Step 4: Simplify right side
    75,431.13x = 3,245,505,961.66
  5. Step 5: Solve for x
    x = 3,245,505,961.66/75,431.13
  6. Step 6: Final answer
    x = 43,026.08

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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.