Home / 84,560.78-126,800.26-31,216.61

Finding the Fourth Proportional to 84,560.78, 126,800.26 and 31,216.61

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Solution

The fourth proportional to 84,560.78, 126,800.26 and 31,216.61 is: 46,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,560.78 : 126,800.26 = 31,216.61 : x
  2. Step 2: Convert to fraction form
    84,560.78/126,800.26 = 31,216.61/x
  3. Step 3: Cross multiply
    84,560.78x = 126,800.26 × 31,216.61
  4. Step 4: Simplify right side
    84,560.78x = 3,958,273,474.23
  5. Step 5: Solve for x
    x = 3,958,273,474.23/84,560.78
  6. Step 6: Final answer
    x = 46,809.81

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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.