Home / 84,353.25-116,272.05-57,120.71

Finding the Fourth Proportional to 84,353.25, 116,272.05 and 57,120.71

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Solution

The fourth proportional to 84,353.25, 116,272.05 and 57,120.71 is: 78,734.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,353.25 : 116,272.05 = 57,120.71 : x
  2. Step 2: Convert to fraction form
    84,353.25/116,272.05 = 57,120.71/x
  3. Step 3: Cross multiply
    84,353.25x = 116,272.05 × 57,120.71
  4. Step 4: Simplify right side
    84,353.25x = 6,641,541,467.80
  5. Step 5: Solve for x
    x = 6,641,541,467.80/84,353.25
  6. Step 6: Final answer
    x = 78,734.86

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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.