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Finding the Fourth Proportional to 80,059.53, 120,089.30 and 20,894.69

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Solution

The fourth proportional to 80,059.53, 120,089.30 and 20,894.69 is: 31,342.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,059.53 : 120,089.30 = 20,894.69 : x
  2. Step 2: Convert to fraction form
    80,059.53/120,089.30 = 20,894.69/x
  3. Step 3: Cross multiply
    80,059.53x = 120,089.30 × 20,894.69
  4. Step 4: Simplify right side
    80,059.53x = 2,509,227,990.90
  5. Step 5: Solve for x
    x = 2,509,227,990.90/80,059.53
  6. Step 6: Final answer
    x = 31,342.03

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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.