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Finding the Fourth Proportional to 72,477.76, 108,753.75 and 33,029.80

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Solution

The fourth proportional to 72,477.76, 108,753.75 and 33,029.80 is: 49,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477.76 : 108,753.75 = 33,029.80 : x
  2. Step 2: Convert to fraction form
    72,477.76/108,753.75 = 33,029.80/x
  3. Step 3: Cross multiply
    72,477.76x = 108,753.75 × 33,029.80
  4. Step 4: Simplify right side
    72,477.76x = 3,592,114,611.75
  5. Step 5: Solve for x
    x = 3,592,114,611.75/72,477.76
  6. Step 6: Final answer
    x = 49,561.61

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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.