Home / 53,801.28-80,669.12-20,485.76

Finding the Fourth Proportional to 53,801.28, 80,669.12 and 20,485.76

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Solution

The fourth proportional to 53,801.28, 80,669.12 and 20,485.76 is: 30,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,801.28 : 80,669.12 = 20,485.76 : x
  2. Step 2: Convert to fraction form
    53,801.28/80,669.12 = 20,485.76/x
  3. Step 3: Cross multiply
    53,801.28x = 80,669.12 × 20,485.76
  4. Step 4: Simplify right side
    53,801.28x = 1,652,568,231.73
  5. Step 5: Solve for x
    x = 1,652,568,231.73/53,801.28
  6. Step 6: Final answer
    x = 30,716.15

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1.5x scale

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.