Home / 71,122.62-98,147.79-39,290.70

Finding the Fourth Proportional to 71,122.62, 98,147.79 and 39,290.70

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Solution

The fourth proportional to 71,122.62, 98,147.79 and 39,290.70 is: 54,220.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,122.62 : 98,147.79 = 39,290.70 : x
  2. Step 2: Convert to fraction form
    71,122.62/98,147.79 = 39,290.70/x
  3. Step 3: Cross multiply
    71,122.62x = 98,147.79 × 39,290.70
  4. Step 4: Simplify right side
    71,122.62x = 3,856,295,372.55
  5. Step 5: Solve for x
    x = 3,856,295,372.55/71,122.62
  6. Step 6: Final answer
    x = 54,220.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.