Home / 80,511.28-120,582.97-38,420.91

Finding the Fourth Proportional to 80,511.28, 120,582.97 and 38,420.91

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Solution

The fourth proportional to 80,511.28, 120,582.97 and 38,420.91 is: 57,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.28 : 120,582.97 = 38,420.91 : x
  2. Step 2: Convert to fraction form
    80,511.28/120,582.97 = 38,420.91/x
  3. Step 3: Cross multiply
    80,511.28x = 120,582.97 × 38,420.91
  4. Step 4: Simplify right side
    80,511.28x = 4,632,907,437.90
  5. Step 5: Solve for x
    x = 4,632,907,437.90/80,511.28
  6. Step 6: Final answer
    x = 57,543.58

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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.