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Finding the Fourth Proportional to 73,126, 109,689.60 and 17,722

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Solution

The fourth proportional to 73,126, 109,689.60 and 17,722 is: 26,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,126 : 109,689.60 = 17,722 : x
  2. Step 2: Convert to fraction form
    73,126/109,689.60 = 17,722/x
  3. Step 3: Cross multiply
    73,126x = 109,689.60 × 17,722
  4. Step 4: Simplify right side
    73,126x = 1,943,919,091.20
  5. Step 5: Solve for x
    x = 1,943,919,091.20/73,126
  6. Step 6: Final answer
    x = 26,583.15

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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.