Home / 80,957.45-121,434.35-21,793.84

Finding the Fourth Proportional to 80,957.45, 121,434.35 and 21,793.84

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Solution

The fourth proportional to 80,957.45, 121,434.35 and 21,793.84 is: 32,690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,957.45 : 121,434.35 = 21,793.84 : x
  2. Step 2: Convert to fraction form
    80,957.45/121,434.35 = 21,793.84/x
  3. Step 3: Cross multiply
    80,957.45x = 121,434.35 × 21,793.84
  4. Step 4: Simplify right side
    80,957.45x = 2,646,520,794.40
  5. Step 5: Solve for x
    x = 2,646,520,794.40/80,957.45
  6. Step 6: Final answer
    x = 32,690.27

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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.