Home / 51,380.83-77,072.82-13,940.75

Finding the Fourth Proportional to 51,380.83, 77,072.82 and 13,940.75

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Solution

The fourth proportional to 51,380.83, 77,072.82 and 13,940.75 is: 20,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,380.83 : 77,072.82 = 13,940.75 : x
  2. Step 2: Convert to fraction form
    51,380.83/77,072.82 = 13,940.75/x
  3. Step 3: Cross multiply
    51,380.83x = 77,072.82 × 13,940.75
  4. Step 4: Simplify right side
    51,380.83x = 1,074,452,915.42
  5. Step 5: Solve for x
    x = 1,074,452,915.42/51,380.83
  6. Step 6: Final answer
    x = 20,911.55

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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.