Home / 84,725.66-126,999.81-28,546.36

Finding the Fourth Proportional to 84,725.66, 126,999.81 and 28,546.36

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Solution

The fourth proportional to 84,725.66, 126,999.81 and 28,546.36 is: 42,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,725.66 : 126,999.81 = 28,546.36 : x
  2. Step 2: Convert to fraction form
    84,725.66/126,999.81 = 28,546.36/x
  3. Step 3: Cross multiply
    84,725.66x = 126,999.81 × 28,546.36
  4. Step 4: Simplify right side
    84,725.66x = 3,625,382,296.19
  5. Step 5: Solve for x
    x = 3,625,382,296.19/84,725.66
  6. Step 6: Final answer
    x = 42,789.66

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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.