Home / 68,478.56-102,576.34-40,311.82

Finding the Fourth Proportional to 68,478.56, 102,576.34 and 40,311.82

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Solution

The fourth proportional to 68,478.56, 102,576.34 and 40,311.82 is: 60,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,478.56 : 102,576.34 = 40,311.82 : x
  2. Step 2: Convert to fraction form
    68,478.56/102,576.34 = 40,311.82/x
  3. Step 3: Cross multiply
    68,478.56x = 102,576.34 × 40,311.82
  4. Step 4: Simplify right side
    68,478.56x = 4,135,038,954.34
  5. Step 5: Solve for x
    x = 4,135,038,954.34/68,478.56
  6. Step 6: Final answer
    x = 60,384.43

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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.