Home / 75,721.57-113,542.89-28,297.69

Finding the Fourth Proportional to 75,721.57, 113,542.89 and 28,297.69

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Solution

The fourth proportional to 75,721.57, 113,542.89 and 28,297.69 is: 42,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.57 : 113,542.89 = 28,297.69 : x
  2. Step 2: Convert to fraction form
    75,721.57/113,542.89 = 28,297.69/x
  3. Step 3: Cross multiply
    75,721.57x = 113,542.89 × 28,297.69
  4. Step 4: Simplify right side
    75,721.57x = 3,213,001,502.92
  5. Step 5: Solve for x
    x = 3,213,001,502.92/75,721.57
  6. Step 6: Final answer
    x = 42,431.79

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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.