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Finding the Fourth Proportional to 72,057.56, 108,107.06 and 29,929.79

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Solution

The fourth proportional to 72,057.56, 108,107.06 and 29,929.79 is: 44,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,057.56 : 108,107.06 = 29,929.79 : x
  2. Step 2: Convert to fraction form
    72,057.56/108,107.06 = 29,929.79/x
  3. Step 3: Cross multiply
    72,057.56x = 108,107.06 × 29,929.79
  4. Step 4: Simplify right side
    72,057.56x = 3,235,621,723.94
  5. Step 5: Solve for x
    x = 3,235,621,723.94/72,057.56
  6. Step 6: Final answer
    x = 44,903.30

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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.