Home / 80,737.87-121,107.48-28,147.27

Finding the Fourth Proportional to 80,737.87, 121,107.48 and 28,147.27

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Solution

The fourth proportional to 80,737.87, 121,107.48 and 28,147.27 is: 42,221.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,737.87 : 121,107.48 = 28,147.27 : x
  2. Step 2: Convert to fraction form
    80,737.87/121,107.48 = 28,147.27/x
  3. Step 3: Cross multiply
    80,737.87x = 121,107.48 × 28,147.27
  4. Step 4: Simplify right side
    80,737.87x = 3,408,844,938.58
  5. Step 5: Solve for x
    x = 3,408,844,938.58/80,737.87
  6. Step 6: Final answer
    x = 42,221.14

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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.