Home / 71,517.72-98,694.78-39,686.60

Finding the Fourth Proportional to 71,517.72, 98,694.78 and 39,686.60

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Solution

The fourth proportional to 71,517.72, 98,694.78 and 39,686.60 is: 54,767.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,517.72 : 98,694.78 = 39,686.60 : x
  2. Step 2: Convert to fraction form
    71,517.72/98,694.78 = 39,686.60/x
  3. Step 3: Cross multiply
    71,517.72x = 98,694.78 × 39,686.60
  4. Step 4: Simplify right side
    71,517.72x = 3,916,860,255.95
  5. Step 5: Solve for x
    x = 3,916,860,255.95/71,517.72
  6. Step 6: Final answer
    x = 54,767.69

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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.