Home / 81,365.45-122,001.39-43,367.91

Finding the Fourth Proportional to 81,365.45, 122,001.39 and 43,367.91

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Solution

The fourth proportional to 81,365.45, 122,001.39 and 43,367.91 is: 65,026.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,365.45 : 122,001.39 = 43,367.91 : x
  2. Step 2: Convert to fraction form
    81,365.45/122,001.39 = 43,367.91/x
  3. Step 3: Cross multiply
    81,365.45x = 122,001.39 × 43,367.91
  4. Step 4: Simplify right side
    81,365.45x = 5,290,944,843.89
  5. Step 5: Solve for x
    x = 5,290,944,843.89/81,365.45
  6. Step 6: Final answer
    x = 65,026.93

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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.