Home / 91,091.55-125,764.83-57,146.58

Finding the Fourth Proportional to 91,091.55, 125,764.83 and 57,146.58

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Solution

The fourth proportional to 91,091.55, 125,764.83 and 57,146.58 is: 78,898.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,091.55 : 125,764.83 = 57,146.58 : x
  2. Step 2: Convert to fraction form
    91,091.55/125,764.83 = 57,146.58/x
  3. Step 3: Cross multiply
    91,091.55x = 125,764.83 × 57,146.58
  4. Step 4: Simplify right side
    91,091.55x = 7,187,029,918.78
  5. Step 5: Solve for x
    x = 7,187,029,918.78/91,091.55
  6. Step 6: Final answer
    x = 78,898.97

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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.