Home / 81,385.98-122,124.33-43,945.26

Finding the Fourth Proportional to 81,385.98, 122,124.33 and 43,945.26

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Solution

The fourth proportional to 81,385.98, 122,124.33 and 43,945.26 is: 65,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,385.98 : 122,124.33 = 43,945.26 : x
  2. Step 2: Convert to fraction form
    81,385.98/122,124.33 = 43,945.26/x
  3. Step 3: Cross multiply
    81,385.98x = 122,124.33 × 43,945.26
  4. Step 4: Simplify right side
    81,385.98x = 5,366,785,434.18
  5. Step 5: Solve for x
    x = 5,366,785,434.18/81,385.98
  6. Step 6: Final answer
    x = 65,942.38

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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.