Home / 81,905.67-113,064.71-55,063.75

Finding the Fourth Proportional to 81,905.67, 113,064.71 and 55,063.75

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Solution

The fourth proportional to 81,905.67, 113,064.71 and 55,063.75 is: 76,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.67 : 113,064.71 = 55,063.75 : x
  2. Step 2: Convert to fraction form
    81,905.67/113,064.71 = 55,063.75/x
  3. Step 3: Cross multiply
    81,905.67x = 113,064.71 × 55,063.75
  4. Step 4: Simplify right side
    81,905.67x = 6,225,766,649.94
  5. Step 5: Solve for x
    x = 6,225,766,649.94/81,905.67
  6. Step 6: Final answer
    x = 76,011.42

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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.