Home / 55,136-76,087.68-29,986.04

Finding the Fourth Proportional to 55,136, 76,087.68 and 29,986.04

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Solution

The fourth proportional to 55,136, 76,087.68 and 29,986.04 is: 41,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136 : 76,087.68 = 29,986.04 : x
  2. Step 2: Convert to fraction form
    55,136/76,087.68 = 29,986.04/x
  3. Step 3: Cross multiply
    55,136x = 76,087.68 × 29,986.04
  4. Step 4: Simplify right side
    55,136x = 2,281,568,215.99
  5. Step 5: Solve for x
    x = 2,281,568,215.99/55,136
  6. Step 6: Final answer
    x = 41,380.74

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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.