Home / 71,676.49-98,890.39-39,839.24

Finding the Fourth Proportional to 71,676.49, 98,890.39 and 39,839.24

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Solution

The fourth proportional to 71,676.49, 98,890.39 and 39,839.24 is: 54,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,676.49 : 98,890.39 = 39,839.24 : x
  2. Step 2: Convert to fraction form
    71,676.49/98,890.39 = 39,839.24/x
  3. Step 3: Cross multiply
    71,676.49x = 98,890.39 × 39,839.24
  4. Step 4: Simplify right side
    71,676.49x = 3,939,717,980.90
  5. Step 5: Solve for x
    x = 3,939,717,980.90/71,676.49
  6. Step 6: Final answer
    x = 54,965.27

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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.