Home / 71,138.76-106,516.94-54,191.04

Finding the Fourth Proportional to 71,138.76, 106,516.94 and 54,191.04

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Solution

The fourth proportional to 71,138.76, 106,516.94 and 54,191.04 is: 81,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,138.76 : 106,516.94 = 54,191.04 : x
  2. Step 2: Convert to fraction form
    71,138.76/106,516.94 = 54,191.04/x
  3. Step 3: Cross multiply
    71,138.76x = 106,516.94 × 54,191.04
  4. Step 4: Simplify right side
    71,138.76x = 5,772,263,756.22
  5. Step 5: Solve for x
    x = 5,772,263,756.22/71,138.76
  6. Step 6: Final answer
    x = 81,140.91

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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.