Home / 76,512.12-114,773.22-20,351.40

Finding the Fourth Proportional to 76,512.12, 114,773.22 and 20,351.40

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Solution

The fourth proportional to 76,512.12, 114,773.22 and 20,351.40 is: 30,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,512.12 : 114,773.22 = 20,351.40 : x
  2. Step 2: Convert to fraction form
    76,512.12/114,773.22 = 20,351.40/x
  3. Step 3: Cross multiply
    76,512.12x = 114,773.22 × 20,351.40
  4. Step 4: Simplify right side
    76,512.12x = 2,335,795,709.51
  5. Step 5: Solve for x
    x = 2,335,795,709.51/76,512.12
  6. Step 6: Final answer
    x = 30,528.44

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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.