Home / 81,433.81-122,110.62-38,727.37

Finding the Fourth Proportional to 81,433.81, 122,110.62 and 38,727.37

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Solution

The fourth proportional to 81,433.81, 122,110.62 and 38,727.37 is: 58,071.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,433.81 : 122,110.62 = 38,727.37 : x
  2. Step 2: Convert to fraction form
    81,433.81/122,110.62 = 38,727.37/x
  3. Step 3: Cross multiply
    81,433.81x = 122,110.62 × 38,727.37
  4. Step 4: Simplify right side
    81,433.81x = 4,729,023,161.67
  5. Step 5: Solve for x
    x = 4,729,023,161.67/81,433.81
  6. Step 6: Final answer
    x = 58,071.99

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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.