Home / 80,745.84-121,119.48-28,155.24

Finding the Fourth Proportional to 80,745.84, 121,119.48 and 28,155.24

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Solution

The fourth proportional to 80,745.84, 121,119.48 and 28,155.24 is: 42,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745.84 : 121,119.48 = 28,155.24 : x
  2. Step 2: Convert to fraction form
    80,745.84/121,119.48 = 28,155.24/x
  3. Step 3: Cross multiply
    80,745.84x = 121,119.48 × 28,155.24
  4. Step 4: Simplify right side
    80,745.84x = 3,410,148,028.08
  5. Step 5: Solve for x
    x = 3,410,148,028.08/80,745.84
  6. Step 6: Final answer
    x = 42,233.11

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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.