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Finding the Fourth Proportional to 72,628.77, 108,949.44 and 20,038.26

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Solution

The fourth proportional to 72,628.77, 108,949.44 and 20,038.26 is: 30,059.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,628.77 : 108,949.44 = 20,038.26 : x
  2. Step 2: Convert to fraction form
    72,628.77/108,949.44 = 20,038.26/x
  3. Step 3: Cross multiply
    72,628.77x = 108,949.44 × 20,038.26
  4. Step 4: Simplify right side
    72,628.77x = 2,183,157,205.57
  5. Step 5: Solve for x
    x = 2,183,157,205.57/72,628.77
  6. Step 6: Final answer
    x = 30,059.12

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1.5x scale

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.