Home / 80,368.69-120,558.04-21,204.42

Finding the Fourth Proportional to 80,368.69, 120,558.04 and 21,204.42

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Solution

The fourth proportional to 80,368.69, 120,558.04 and 21,204.42 is: 31,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,368.69 : 120,558.04 = 21,204.42 : x
  2. Step 2: Convert to fraction form
    80,368.69/120,558.04 = 21,204.42/x
  3. Step 3: Cross multiply
    80,368.69x = 120,558.04 × 21,204.42
  4. Step 4: Simplify right side
    80,368.69x = 2,556,362,809.43
  5. Step 5: Solve for x
    x = 2,556,362,809.43/80,368.69
  6. Step 6: Final answer
    x = 31,807.94

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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.