Home / 45,338.90-68,030.70-20,396.60

Finding the Fourth Proportional to 45,338.90, 68,030.70 and 20,396.60

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Solution

The fourth proportional to 45,338.90, 68,030.70 and 20,396.60 is: 30,604.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,338.90 : 68,030.70 = 20,396.60 : x
  2. Step 2: Convert to fraction form
    45,338.90/68,030.70 = 20,396.60/x
  3. Step 3: Cross multiply
    45,338.90x = 68,030.70 × 20,396.60
  4. Step 4: Simplify right side
    45,338.90x = 1,387,594,975.62
  5. Step 5: Solve for x
    x = 1,387,594,975.62/45,338.90
  6. Step 6: Final answer
    x = 30,604.95

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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.