Home / 90,708.28-125,175-50,421.04

Finding the Fourth Proportional to 90,708.28, 125,175 and 50,421.04

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Solution

The fourth proportional to 90,708.28, 125,175 and 50,421.04 is: 69,579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.28 : 125,175 = 50,421.04 : x
  2. Step 2: Convert to fraction form
    90,708.28/125,175 = 50,421.04/x
  3. Step 3: Cross multiply
    90,708.28x = 125,175 × 50,421.04
  4. Step 4: Simplify right side
    90,708.28x = 6,311,453,682
  5. Step 5: Solve for x
    x = 6,311,453,682/90,708.28
  6. Step 6: Final answer
    x = 69,579.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.