Home / 80,921,738.40-121,382,607.60-55,093,705.80

Finding the Fourth Proportional to 80,921,738.40, 121,382,607.60 and 55,093,705.80

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Solution

The fourth proportional to 80,921,738.40, 121,382,607.60 and 55,093,705.80 is: 82,640,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921,738.40 : 121,382,607.60 = 55,093,705.80 : x
  2. Step 2: Convert to fraction form
    80,921,738.40/121,382,607.60 = 55,093,705.80/x
  3. Step 3: Cross multiply
    80,921,738.40x = 121,382,607.60 × 55,093,705.80
  4. Step 4: Simplify right side
    80,921,738.40x = 6,687,417,672,351,243
  5. Step 5: Solve for x
    x = 6,687,417,672,351,243/80,921,738.40
  6. Step 6: Final answer
    x = 82,640,558.70

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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.