Home / 75,247.20-112,862.88-30,878.64

Finding the Fourth Proportional to 75,247.20, 112,862.88 and 30,878.64

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Solution

The fourth proportional to 75,247.20, 112,862.88 and 30,878.64 is: 46,314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,247.20 : 112,862.88 = 30,878.64 : x
  2. Step 2: Convert to fraction form
    75,247.20/112,862.88 = 30,878.64/x
  3. Step 3: Cross multiply
    75,247.20x = 112,862.88 × 30,878.64
  4. Step 4: Simplify right side
    75,247.20x = 3,485,052,240.88
  5. Step 5: Solve for x
    x = 3,485,052,240.88/75,247.20
  6. Step 6: Final answer
    x = 46,314.71

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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.