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Finding the Fourth Proportional to 66,145.88, 91,281.51 and 35,930.97

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Solution

The fourth proportional to 66,145.88, 91,281.51 and 35,930.97 is: 49,584.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.88 : 91,281.51 = 35,930.97 : x
  2. Step 2: Convert to fraction form
    66,145.88/91,281.51 = 35,930.97/x
  3. Step 3: Cross multiply
    66,145.88x = 91,281.51 × 35,930.97
  4. Step 4: Simplify right side
    66,145.88x = 3,279,833,197.36
  5. Step 5: Solve for x
    x = 3,279,833,197.36/66,145.88
  6. Step 6: Final answer
    x = 49,584.84

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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.