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Finding the Fourth Proportional to 80,059.78, 120,089.67 and 20,894.94

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Solution

The fourth proportional to 80,059.78, 120,089.67 and 20,894.94 is: 31,342.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,059.78 : 120,089.67 = 20,894.94 : x
  2. Step 2: Convert to fraction form
    80,059.78/120,089.67 = 20,894.94/x
  3. Step 3: Cross multiply
    80,059.78x = 120,089.67 × 20,894.94
  4. Step 4: Simplify right side
    80,059.78x = 2,509,266,449.27
  5. Step 5: Solve for x
    x = 2,509,266,449.27/80,059.78
  6. Step 6: Final answer
    x = 31,342.41

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1.5x scale

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.