Home / 81,131.98-111,876.13-55,675.47

Finding the Fourth Proportional to 81,131.98, 111,876.13 and 55,675.47

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Solution

The fourth proportional to 81,131.98, 111,876.13 and 55,675.47 is: 76,773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,131.98 : 111,876.13 = 55,675.47 : x
  2. Step 2: Convert to fraction form
    81,131.98/111,876.13 = 55,675.47/x
  3. Step 3: Cross multiply
    81,131.98x = 111,876.13 × 55,675.47
  4. Step 4: Simplify right side
    81,131.98x = 6,228,756,119.53
  5. Step 5: Solve for x
    x = 6,228,756,119.53/81,131.98
  6. Step 6: Final answer
    x = 76,773.13

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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.