Home / 71,689.08-98,930.70-39,857.97

Finding the Fourth Proportional to 71,689.08, 98,930.70 and 39,857.97

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Solution

The fourth proportional to 71,689.08, 98,930.70 and 39,857.97 is: 55,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,689.08 : 98,930.70 = 39,857.97 : x
  2. Step 2: Convert to fraction form
    71,689.08/98,930.70 = 39,857.97/x
  3. Step 3: Cross multiply
    71,689.08x = 98,930.70 × 39,857.97
  4. Step 4: Simplify right side
    71,689.08x = 3,943,176,872.68
  5. Step 5: Solve for x
    x = 3,943,176,872.68/71,689.08
  6. Step 6: Final answer
    x = 55,003.87

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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.