Home / 75,363.12-113,081.28-31,003.20

Finding the Fourth Proportional to 75,363.12, 113,081.28 and 31,003.20

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Solution

The fourth proportional to 75,363.12, 113,081.28 and 31,003.20 is: 46,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,363.12 : 113,081.28 = 31,003.20 : x
  2. Step 2: Convert to fraction form
    75,363.12/113,081.28 = 31,003.20/x
  3. Step 3: Cross multiply
    75,363.12x = 113,081.28 × 31,003.20
  4. Step 4: Simplify right side
    75,363.12x = 3,505,881,540.10
  5. Step 5: Solve for x
    x = 3,505,881,540.10/75,363.12
  6. Step 6: Final answer
    x = 46,519.86

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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.