Home / 73,121.24-100,906.86-39,587

Finding the Fourth Proportional to 73,121.24, 100,906.86 and 39,587

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Solution

The fourth proportional to 73,121.24, 100,906.86 and 39,587 is: 54,629.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,121.24 : 100,906.86 = 39,587 : x
  2. Step 2: Convert to fraction form
    73,121.24/100,906.86 = 39,587/x
  3. Step 3: Cross multiply
    73,121.24x = 100,906.86 × 39,587
  4. Step 4: Simplify right side
    73,121.24x = 3,994,599,866.82
  5. Step 5: Solve for x
    x = 3,994,599,866.82/73,121.24
  6. Step 6: Final answer
    x = 54,629.82

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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.