Home / 83,910.36-125,790.66-31,322.28

Finding the Fourth Proportional to 83,910.36, 125,790.66 and 31,322.28

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Solution

The fourth proportional to 83,910.36, 125,790.66 and 31,322.28 is: 46,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,910.36 : 125,790.66 = 31,322.28 : x
  2. Step 2: Convert to fraction form
    83,910.36/125,790.66 = 31,322.28/x
  3. Step 3: Cross multiply
    83,910.36x = 125,790.66 × 31,322.28
  4. Step 4: Simplify right side
    83,910.36x = 3,940,050,273.90
  5. Step 5: Solve for x
    x = 3,940,050,273.90/83,910.36
  6. Step 6: Final answer
    x = 46,955.47

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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.