Home / 80,368.24-120,540.52-21,208.07

Finding the Fourth Proportional to 80,368.24, 120,540.52 and 21,208.07

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Solution

The fourth proportional to 80,368.24, 120,540.52 and 21,208.07 is: 31,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,368.24 : 120,540.52 = 21,208.07 : x
  2. Step 2: Convert to fraction form
    80,368.24/120,540.52 = 21,208.07/x
  3. Step 3: Cross multiply
    80,368.24x = 120,540.52 × 21,208.07
  4. Step 4: Simplify right side
    80,368.24x = 2,556,431,786.00
  5. Step 5: Solve for x
    x = 2,556,431,786.00/80,368.24
  6. Step 6: Final answer
    x = 31,808.98

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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.