Home / 81,429.82-121,964.28-62,571.04

Finding the Fourth Proportional to 81,429.82, 121,964.28 and 62,571.04

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Solution

The fourth proportional to 81,429.82, 121,964.28 and 62,571.04 is: 93,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.82 : 121,964.28 = 62,571.04 : x
  2. Step 2: Convert to fraction form
    81,429.82/121,964.28 = 62,571.04/x
  3. Step 3: Cross multiply
    81,429.82x = 121,964.28 × 62,571.04
  4. Step 4: Simplify right side
    81,429.82x = 7,631,431,842.45
  5. Step 5: Solve for x
    x = 7,631,431,842.45/81,429.82
  6. Step 6: Final answer
    x = 93,717.90

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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.