Home / 70,912.11-106,276.10-28,742.85

Finding the Fourth Proportional to 70,912.11, 106,276.10 and 28,742.85

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Solution

The fourth proportional to 70,912.11, 106,276.10 and 28,742.85 is: 43,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.11 : 106,276.10 = 28,742.85 : x
  2. Step 2: Convert to fraction form
    70,912.11/106,276.10 = 28,742.85/x
  3. Step 3: Cross multiply
    70,912.11x = 106,276.10 × 28,742.85
  4. Step 4: Simplify right side
    70,912.11x = 3,054,678,018.85
  5. Step 5: Solve for x
    x = 3,054,678,018.85/70,912.11
  6. Step 6: Final answer
    x = 43,076.96

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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.