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Finding the Fourth Proportional to 72,600.50, 108,906.22 and 20,009.53

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Solution

The fourth proportional to 72,600.50, 108,906.22 and 20,009.53 is: 30,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,600.50 : 108,906.22 = 20,009.53 : x
  2. Step 2: Convert to fraction form
    72,600.50/108,906.22 = 20,009.53/x
  3. Step 3: Cross multiply
    72,600.50x = 108,906.22 × 20,009.53
  4. Step 4: Simplify right side
    72,600.50x = 2,179,162,437.42
  5. Step 5: Solve for x
    x = 2,179,162,437.42/72,600.50
  6. Step 6: Final answer
    x = 30,015.80

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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.