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Finding the Fourth Proportional to 73,297.62, 109,953.96 and 19,990.74

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Solution

The fourth proportional to 73,297.62, 109,953.96 and 19,990.74 is: 29,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,297.62 : 109,953.96 = 19,990.74 : x
  2. Step 2: Convert to fraction form
    73,297.62/109,953.96 = 19,990.74/x
  3. Step 3: Cross multiply
    73,297.62x = 109,953.96 × 19,990.74
  4. Step 4: Simplify right side
    73,297.62x = 2,198,061,026.33
  5. Step 5: Solve for x
    x = 2,198,061,026.33/73,297.62
  6. Step 6: Final answer
    x = 29,988.16

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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.