Home / 80,922.60-121,447.40-56,137.04

Finding the Fourth Proportional to 80,922.60, 121,447.40 and 56,137.04

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Solution

The fourth proportional to 80,922.60, 121,447.40 and 56,137.04 is: 84,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,922.60 : 121,447.40 = 56,137.04 : x
  2. Step 2: Convert to fraction form
    80,922.60/121,447.40 = 56,137.04/x
  3. Step 3: Cross multiply
    80,922.60x = 121,447.40 × 56,137.04
  4. Step 4: Simplify right side
    80,922.60x = 6,817,697,551.70
  5. Step 5: Solve for x
    x = 6,817,697,551.70/80,922.60
  6. Step 6: Final answer
    x = 84,249.61

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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.