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Finding the Fourth Proportional to 66,143.96, 91,279.65 and 35,929.87

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Solution

The fourth proportional to 66,143.96, 91,279.65 and 35,929.87 is: 49,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.96 : 91,279.65 = 35,929.87 : x
  2. Step 2: Convert to fraction form
    66,143.96/91,279.65 = 35,929.87/x
  3. Step 3: Cross multiply
    66,143.96x = 91,279.65 × 35,929.87
  4. Step 4: Simplify right side
    66,143.96x = 3,279,665,958.15
  5. Step 5: Solve for x
    x = 3,279,665,958.15/66,143.96
  6. Step 6: Final answer
    x = 49,583.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.