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Finding the Fourth Proportional to 72,627.77, 108,947.94 and 20,037.26

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Solution

The fourth proportional to 72,627.77, 108,947.94 and 20,037.26 is: 30,057.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,627.77 : 108,947.94 = 20,037.26 : x
  2. Step 2: Convert to fraction form
    72,627.77/108,947.94 = 20,037.26/x
  3. Step 3: Cross multiply
    72,627.77x = 108,947.94 × 20,037.26
  4. Step 4: Simplify right side
    72,627.77x = 2,183,017,827.69
  5. Step 5: Solve for x
    x = 2,183,017,827.69/72,627.77
  6. Step 6: Final answer
    x = 30,057.62

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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.