Home / 81,680.57-122,537.86-25,518.41

Finding the Fourth Proportional to 81,680.57, 122,537.86 and 25,518.41

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Solution

The fourth proportional to 81,680.57, 122,537.86 and 25,518.41 is: 38,282.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,680.57 : 122,537.86 = 25,518.41 : x
  2. Step 2: Convert to fraction form
    81,680.57/122,537.86 = 25,518.41/x
  3. Step 3: Cross multiply
    81,680.57x = 122,537.86 × 25,518.41
  4. Step 4: Simplify right side
    81,680.57x = 3,126,971,352.00
  5. Step 5: Solve for x
    x = 3,126,971,352.00/81,680.57
  6. Step 6: Final answer
    x = 38,282.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.