Home / 67,268.80-100,899.54-20,518

Finding the Fourth Proportional to 67,268.80, 100,899.54 and 20,518

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Solution

The fourth proportional to 67,268.80, 100,899.54 and 20,518 is: 30,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,268.80 : 100,899.54 = 20,518 : x
  2. Step 2: Convert to fraction form
    67,268.80/100,899.54 = 20,518/x
  3. Step 3: Cross multiply
    67,268.80x = 100,899.54 × 20,518
  4. Step 4: Simplify right side
    67,268.80x = 2,070,256,761.72
  5. Step 5: Solve for x
    x = 2,070,256,761.72/67,268.80
  6. Step 6: Final answer
    x = 30,775.88

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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.