Home / 71,147.54-98,180.41-39,315.75

Finding the Fourth Proportional to 71,147.54, 98,180.41 and 39,315.75

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Solution

The fourth proportional to 71,147.54, 98,180.41 and 39,315.75 is: 54,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,147.54 : 98,180.41 = 39,315.75 : x
  2. Step 2: Convert to fraction form
    71,147.54/98,180.41 = 39,315.75/x
  3. Step 3: Cross multiply
    71,147.54x = 98,180.41 × 39,315.75
  4. Step 4: Simplify right side
    71,147.54x = 3,860,036,454.46
  5. Step 5: Solve for x
    x = 3,860,036,454.46/71,147.54
  6. Step 6: Final answer
    x = 54,253.97

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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.