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Finding the Fourth Proportional to 71,029.89, 98,019.72 and 39,198.51

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Solution

The fourth proportional to 71,029.89, 98,019.72 and 39,198.51 is: 54,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,029.89 : 98,019.72 = 39,198.51 : x
  2. Step 2: Convert to fraction form
    71,029.89/98,019.72 = 39,198.51/x
  3. Step 3: Cross multiply
    71,029.89x = 98,019.72 × 39,198.51
  4. Step 4: Simplify right side
    71,029.89x = 3,842,226,974.62
  5. Step 5: Solve for x
    x = 3,842,226,974.62/71,029.89
  6. Step 6: Final answer
    x = 54,093.10

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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.