Home / 80,799.92-121,201.36-30,903.20

Finding the Fourth Proportional to 80,799.92, 121,201.36 and 30,903.20

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Solution

The fourth proportional to 80,799.92, 121,201.36 and 30,903.20 is: 46,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,799.92 : 121,201.36 = 30,903.20 : x
  2. Step 2: Convert to fraction form
    80,799.92/121,201.36 = 30,903.20/x
  3. Step 3: Cross multiply
    80,799.92x = 121,201.36 × 30,903.20
  4. Step 4: Simplify right side
    80,799.92x = 3,745,509,868.35
  5. Step 5: Solve for x
    x = 3,745,509,868.35/80,799.92
  6. Step 6: Final answer
    x = 46,355.37

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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.