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Finding the Fourth Proportional to 80,511.77, 120,583.73 and 38,421.41

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Solution

The fourth proportional to 80,511.77, 120,583.73 and 38,421.41 is: 57,544.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.77 : 120,583.73 = 38,421.41 : x
  2. Step 2: Convert to fraction form
    80,511.77/120,583.73 = 38,421.41/x
  3. Step 3: Cross multiply
    80,511.77x = 120,583.73 × 38,421.41
  4. Step 4: Simplify right side
    80,511.77x = 4,632,997,039.01
  5. Step 5: Solve for x
    x = 4,632,997,039.01/80,511.77
  6. Step 6: Final answer
    x = 57,544.34

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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.