Home / 71,121.42-98,146.14-39,290.04

Finding the Fourth Proportional to 71,121.42, 98,146.14 and 39,290.04

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Solution

The fourth proportional to 71,121.42, 98,146.14 and 39,290.04 is: 54,219.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,121.42 : 98,146.14 = 39,290.04 : x
  2. Step 2: Convert to fraction form
    71,121.42/98,146.14 = 39,290.04/x
  3. Step 3: Cross multiply
    71,121.42x = 98,146.14 × 39,290.04
  4. Step 4: Simplify right side
    71,121.42x = 3,856,165,766.45
  5. Step 5: Solve for x
    x = 3,856,165,766.45/71,121.42
  6. Step 6: Final answer
    x = 54,219.47

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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.