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Finding the Fourth Proportional to 72,609.40, 108,761.01 and 33,199.66

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Solution

The fourth proportional to 72,609.40, 108,761.01 and 33,199.66 is: 49,729.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609.40 : 108,761.01 = 33,199.66 : x
  2. Step 2: Convert to fraction form
    72,609.40/108,761.01 = 33,199.66/x
  3. Step 3: Cross multiply
    72,609.40x = 108,761.01 × 33,199.66
  4. Step 4: Simplify right side
    72,609.40x = 3,610,828,553.26
  5. Step 5: Solve for x
    x = 3,610,828,553.26/72,609.40
  6. Step 6: Final answer
    x = 49,729.49

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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.