Home / 80,975.40-121,434.30-36,623.40

Finding the Fourth Proportional to 80,975.40, 121,434.30 and 36,623.40

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Solution

The fourth proportional to 80,975.40, 121,434.30 and 36,623.40 is: 54,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,975.40 : 121,434.30 = 36,623.40 : x
  2. Step 2: Convert to fraction form
    80,975.40/121,434.30 = 36,623.40/x
  3. Step 3: Cross multiply
    80,975.40x = 121,434.30 × 36,623.40
  4. Step 4: Simplify right side
    80,975.40x = 4,447,336,942.62
  5. Step 5: Solve for x
    x = 4,447,336,942.62/80,975.40
  6. Step 6: Final answer
    x = 54,922.07

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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.