Home / 80,734.87-121,102.98-28,144.27

Finding the Fourth Proportional to 80,734.87, 121,102.98 and 28,144.27

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Solution

The fourth proportional to 80,734.87, 121,102.98 and 28,144.27 is: 42,216.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,734.87 : 121,102.98 = 28,144.27 : x
  2. Step 2: Convert to fraction form
    80,734.87/121,102.98 = 28,144.27/x
  3. Step 3: Cross multiply
    80,734.87x = 121,102.98 × 28,144.27
  4. Step 4: Simplify right side
    80,734.87x = 3,408,354,966.92
  5. Step 5: Solve for x
    x = 3,408,354,966.92/80,734.87
  6. Step 6: Final answer
    x = 42,216.64

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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.