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Finding the Fourth Proportional to 73,289.70, 109,859.49 and 28,898.46

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Solution

The fourth proportional to 73,289.70, 109,859.49 and 28,898.46 is: 43,318.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,289.70 : 109,859.49 = 28,898.46 : x
  2. Step 2: Convert to fraction form
    73,289.70/109,859.49 = 28,898.46/x
  3. Step 3: Cross multiply
    73,289.70x = 109,859.49 × 28,898.46
  4. Step 4: Simplify right side
    73,289.70x = 3,174,770,077.39
  5. Step 5: Solve for x
    x = 3,174,770,077.39/73,289.70
  6. Step 6: Final answer
    x = 43,318.09

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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.