Home / 80,751.37-121,135.12-30,873.42

Finding the Fourth Proportional to 80,751.37, 121,135.12 and 30,873.42

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Solution

The fourth proportional to 80,751.37, 121,135.12 and 30,873.42 is: 46,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751.37 : 121,135.12 = 30,873.42 : x
  2. Step 2: Convert to fraction form
    80,751.37/121,135.12 = 30,873.42/x
  3. Step 3: Cross multiply
    80,751.37x = 121,135.12 × 30,873.42
  4. Step 4: Simplify right side
    80,751.37x = 3,739,855,436.51
  5. Step 5: Solve for x
    x = 3,739,855,436.51/80,751.37
  6. Step 6: Final answer
    x = 46,313.21

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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.