Home / 71,149.09-98,181.88-39,315.94

Finding the Fourth Proportional to 71,149.09, 98,181.88 and 39,315.94

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Solution

The fourth proportional to 71,149.09, 98,181.88 and 39,315.94 is: 54,253.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,149.09 : 98,181.88 = 39,315.94 : x
  2. Step 2: Convert to fraction form
    71,149.09/98,181.88 = 39,315.94/x
  3. Step 3: Cross multiply
    71,149.09x = 98,181.88 × 39,315.94
  4. Step 4: Simplify right side
    71,149.09x = 3,860,112,559.42
  5. Step 5: Solve for x
    x = 3,860,112,559.42/71,149.09
  6. Step 6: Final answer
    x = 54,253.86

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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.