Home / 75,420.44-113,145.25-28,669.67

Finding the Fourth Proportional to 75,420.44, 113,145.25 and 28,669.67

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Solution

The fourth proportional to 75,420.44, 113,145.25 and 28,669.67 is: 43,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.44 : 113,145.25 = 28,669.67 : x
  2. Step 2: Convert to fraction form
    75,420.44/113,145.25 = 28,669.67/x
  3. Step 3: Cross multiply
    75,420.44x = 113,145.25 × 28,669.67
  4. Step 4: Simplify right side
    75,420.44x = 3,243,836,979.57
  5. Step 5: Solve for x
    x = 3,243,836,979.57/75,420.44
  6. Step 6: Final answer
    x = 43,010.05

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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.