Home / 81,906.45-113,065.77-55,064.52

Finding the Fourth Proportional to 81,906.45, 113,065.77 and 55,064.52

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Solution

The fourth proportional to 81,906.45, 113,065.77 and 55,064.52 is: 76,012.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,906.45 : 113,065.77 = 55,064.52 : x
  2. Step 2: Convert to fraction form
    81,906.45/113,065.77 = 55,064.52/x
  3. Step 3: Cross multiply
    81,906.45x = 113,065.77 × 55,064.52
  4. Step 4: Simplify right side
    81,906.45x = 6,225,912,877.97
  5. Step 5: Solve for x
    x = 6,225,912,877.97/81,906.45
  6. Step 6: Final answer
    x = 76,012.49

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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.