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Finding the Fourth Proportional to 73,201.44, 109,802.88 and 20,611.92

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Solution

The fourth proportional to 73,201.44, 109,802.88 and 20,611.92 is: 30,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,201.44 : 109,802.88 = 20,611.92 : x
  2. Step 2: Convert to fraction form
    73,201.44/109,802.88 = 20,611.92/x
  3. Step 3: Cross multiply
    73,201.44x = 109,802.88 × 20,611.92
  4. Step 4: Simplify right side
    73,201.44x = 2,263,248,178.33
  5. Step 5: Solve for x
    x = 2,263,248,178.33/73,201.44
  6. Step 6: Final answer
    x = 30,918.08

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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.