Home / 70,732.85-106,099.31-18,142.34

Finding the Fourth Proportional to 70,732.85, 106,099.31 and 18,142.34

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Solution

The fourth proportional to 70,732.85, 106,099.31 and 18,142.34 is: 27,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,732.85 : 106,099.31 = 18,142.34 : x
  2. Step 2: Convert to fraction form
    70,732.85/106,099.31 = 18,142.34/x
  3. Step 3: Cross multiply
    70,732.85x = 106,099.31 × 18,142.34
  4. Step 4: Simplify right side
    70,732.85x = 1,924,889,755.79
  5. Step 5: Solve for x
    x = 1,924,889,755.79/70,732.85
  6. Step 6: Final answer
    x = 27,213.52

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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.