Home / 80,790,703.58-121,186,072.65-20,206,436.06

Finding the Fourth Proportional to 80,790,703.58, 121,186,072.65 and 20,206,436.06

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Solution

The fourth proportional to 80,790,703.58, 121,186,072.65 and 20,206,436.06 is: 30,309,658.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,790,703.58 : 121,186,072.65 = 20,206,436.06 : x
  2. Step 2: Convert to fraction form
    80,790,703.58/121,186,072.65 = 20,206,436.06/x
  3. Step 3: Cross multiply
    80,790,703.58x = 121,186,072.65 × 20,206,436.06
  4. Step 4: Simplify right side
    80,790,703.58x = 2,448,738,628,364,739.50
  5. Step 5: Solve for x
    x = 2,448,738,628,364,739.50/80,790,703.58
  6. Step 6: Final answer
    x = 30,309,658.41

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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.