Home / 80,902.65-121,334.54-41,439.45

Finding the Fourth Proportional to 80,902.65, 121,334.54 and 41,439.45

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Solution

The fourth proportional to 80,902.65, 121,334.54 and 41,439.45 is: 62,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.65 : 121,334.54 = 41,439.45 : x
  2. Step 2: Convert to fraction form
    80,902.65/121,334.54 = 41,439.45/x
  3. Step 3: Cross multiply
    80,902.65x = 121,334.54 × 41,439.45
  4. Step 4: Simplify right side
    80,902.65x = 5,028,036,396.41
  5. Step 5: Solve for x
    x = 5,028,036,396.41/80,902.65
  6. Step 6: Final answer
    x = 62,149.22

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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.