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Finding the Fourth Proportional to 73,126.78, 109,690.17 and 17,722.78

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Solution

The fourth proportional to 73,126.78, 109,690.17 and 17,722.78 is: 26,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,126.78 : 109,690.17 = 17,722.78 : x
  2. Step 2: Convert to fraction form
    73,126.78/109,690.17 = 17,722.78/x
  3. Step 3: Cross multiply
    73,126.78x = 109,690.17 × 17,722.78
  4. Step 4: Simplify right side
    73,126.78x = 1,944,014,954.65
  5. Step 5: Solve for x
    x = 1,944,014,954.65/73,126.78
  6. Step 6: Final answer
    x = 26,584.17

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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.