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Finding the Fourth Proportional to 80,485.57, 120,646.28 and 36,100.41

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Solution

The fourth proportional to 80,485.57, 120,646.28 and 36,100.41 is: 54,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,485.57 : 120,646.28 = 36,100.41 : x
  2. Step 2: Convert to fraction form
    80,485.57/120,646.28 = 36,100.41/x
  3. Step 3: Cross multiply
    80,485.57x = 120,646.28 × 36,100.41
  4. Step 4: Simplify right side
    80,485.57x = 4,355,379,389.24
  5. Step 5: Solve for x
    x = 4,355,379,389.24/80,485.57
  6. Step 6: Final answer
    x = 54,113.79

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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.