Home / 71,726.88-98,971.68-39,895.68

Finding the Fourth Proportional to 71,726.88, 98,971.68 and 39,895.68

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Solution

The fourth proportional to 71,726.88, 98,971.68 and 39,895.68 is: 55,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,726.88 : 98,971.68 = 39,895.68 : x
  2. Step 2: Convert to fraction form
    71,726.88/98,971.68 = 39,895.68/x
  3. Step 3: Cross multiply
    71,726.88x = 98,971.68 × 39,895.68
  4. Step 4: Simplify right side
    71,726.88x = 3,948,542,474.34
  5. Step 5: Solve for x
    x = 3,948,542,474.34/71,726.88
  6. Step 6: Final answer
    x = 55,049.69

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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.