Home / 45,411.96-68,121.35-12,131.29

Finding the Fourth Proportional to 45,411.96, 68,121.35 and 12,131.29

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Solution

The fourth proportional to 45,411.96, 68,121.35 and 12,131.29 is: 18,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,411.96 : 68,121.35 = 12,131.29 : x
  2. Step 2: Convert to fraction form
    45,411.96/68,121.35 = 12,131.29/x
  3. Step 3: Cross multiply
    45,411.96x = 68,121.35 × 12,131.29
  4. Step 4: Simplify right side
    45,411.96x = 826,399,852.04
  5. Step 5: Solve for x
    x = 826,399,852.04/45,411.96
  6. Step 6: Final answer
    x = 18,197.85

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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.