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Finding the Fourth Proportional to 72,056.31, 108,105.18 and 29,928.54

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Solution

The fourth proportional to 72,056.31, 108,105.18 and 29,928.54 is: 44,901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,056.31 : 108,105.18 = 29,928.54 : x
  2. Step 2: Convert to fraction form
    72,056.31/108,105.18 = 29,928.54/x
  3. Step 3: Cross multiply
    72,056.31x = 108,105.18 × 29,928.54
  4. Step 4: Simplify right side
    72,056.31x = 3,235,430,203.84
  5. Step 5: Solve for x
    x = 3,235,430,203.84/72,056.31
  6. Step 6: Final answer
    x = 44,901.41

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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.