Home / 75,531.63-113,297.25-28,145.65

Finding the Fourth Proportional to 75,531.63, 113,297.25 and 28,145.65

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Solution

The fourth proportional to 75,531.63, 113,297.25 and 28,145.65 is: 42,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,531.63 : 113,297.25 = 28,145.65 : x
  2. Step 2: Convert to fraction form
    75,531.63/113,297.25 = 28,145.65/x
  3. Step 3: Cross multiply
    75,531.63x = 113,297.25 × 28,145.65
  4. Step 4: Simplify right side
    75,531.63x = 3,188,824,399.43
  5. Step 5: Solve for x
    x = 3,188,824,399.43/75,531.63
  6. Step 6: Final answer
    x = 42,218.40

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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.