Home / 40,767.75-61,160.40-12,687.21

Finding the Fourth Proportional to 40,767.75, 61,160.40 and 12,687.21

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Solution

The fourth proportional to 40,767.75, 61,160.40 and 12,687.21 is: 19,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,767.75 : 61,160.40 = 12,687.21 : x
  2. Step 2: Convert to fraction form
    40,767.75/61,160.40 = 12,687.21/x
  3. Step 3: Cross multiply
    40,767.75x = 61,160.40 × 12,687.21
  4. Step 4: Simplify right side
    40,767.75x = 775,954,838.48
  5. Step 5: Solve for x
    x = 775,954,838.48/40,767.75
  6. Step 6: Final answer
    x = 19,033.55

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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.