Home / 57,965.61-86,932.35-20,520.75

Finding the Fourth Proportional to 57,965.61, 86,932.35 and 20,520.75

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Solution

The fourth proportional to 57,965.61, 86,932.35 and 20,520.75 is: 30,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,965.61 : 86,932.35 = 20,520.75 : x
  2. Step 2: Convert to fraction form
    57,965.61/86,932.35 = 20,520.75/x
  3. Step 3: Cross multiply
    57,965.61x = 86,932.35 × 20,520.75
  4. Step 4: Simplify right side
    57,965.61x = 1,783,917,021.26
  5. Step 5: Solve for x
    x = 1,783,917,021.26/57,965.61
  6. Step 6: Final answer
    x = 30,775.44

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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.