Home / 82,125.06-113,235.42-57,930

Finding the Fourth Proportional to 82,125.06, 113,235.42 and 57,930

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Solution

The fourth proportional to 82,125.06, 113,235.42 and 57,930 is: 79,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,125.06 : 113,235.42 = 57,930 : x
  2. Step 2: Convert to fraction form
    82,125.06/113,235.42 = 57,930/x
  3. Step 3: Cross multiply
    82,125.06x = 113,235.42 × 57,930
  4. Step 4: Simplify right side
    82,125.06x = 6,559,727,880.60
  5. Step 5: Solve for x
    x = 6,559,727,880.60/82,125.06
  6. Step 6: Final answer
    x = 79,874.86

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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.