Home / 47,920.80-71,815.44-30,359.04

Finding the Fourth Proportional to 47,920.80, 71,815.44 and 30,359.04

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Solution

The fourth proportional to 47,920.80, 71,815.44 and 30,359.04 is: 45,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,920.80 : 71,815.44 = 30,359.04 : x
  2. Step 2: Convert to fraction form
    47,920.80/71,815.44 = 30,359.04/x
  3. Step 3: Cross multiply
    47,920.80x = 71,815.44 × 30,359.04
  4. Step 4: Simplify right side
    47,920.80x = 2,180,247,815.58
  5. Step 5: Solve for x
    x = 2,180,247,815.58/47,920.80
  6. Step 6: Final answer
    x = 45,496.90

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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.