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Finding the Fourth Proportional to 66,145.92, 91,278.74 and 35,930.63

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Solution

The fourth proportional to 66,145.92, 91,278.74 and 35,930.63 is: 49,582.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.92 : 91,278.74 = 35,930.63 : x
  2. Step 2: Convert to fraction form
    66,145.92/91,278.74 = 35,930.63/x
  3. Step 3: Cross multiply
    66,145.92x = 91,278.74 × 35,930.63
  4. Step 4: Simplify right side
    66,145.92x = 3,279,701,997.76
  5. Step 5: Solve for x
    x = 3,279,701,997.76/66,145.92
  6. Step 6: Final answer
    x = 49,582.83

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1.5x scale

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.