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Finding the Fourth Proportional to 73,188.82, 109,789.68 and 20,598.76

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Solution

The fourth proportional to 73,188.82, 109,789.68 and 20,598.76 is: 30,899.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.82 : 109,789.68 = 20,598.76 : x
  2. Step 2: Convert to fraction form
    73,188.82/109,789.68 = 20,598.76/x
  3. Step 3: Cross multiply
    73,188.82x = 109,789.68 × 20,598.76
  4. Step 4: Simplify right side
    73,188.82x = 2,261,531,268.80
  5. Step 5: Solve for x
    x = 2,261,531,268.80/73,188.82
  6. Step 6: Final answer
    x = 30,899.96

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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.