Home / 80,283.41-120,442.01-30,362.39

Finding the Fourth Proportional to 80,283.41, 120,442.01 and 30,362.39

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Solution

The fourth proportional to 80,283.41, 120,442.01 and 30,362.39 is: 45,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,283.41 : 120,442.01 = 30,362.39 : x
  2. Step 2: Convert to fraction form
    80,283.41/120,442.01 = 30,362.39/x
  3. Step 3: Cross multiply
    80,283.41x = 120,442.01 × 30,362.39
  4. Step 4: Simplify right side
    80,283.41x = 3,656,906,525.98
  5. Step 5: Solve for x
    x = 3,656,906,525.98/80,283.41
  6. Step 6: Final answer
    x = 45,549.97

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1.5x scale

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.