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Finding the Fourth Proportional to 66,109.74, 91,231.44 and 35,894.92

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Solution

The fourth proportional to 66,109.74, 91,231.44 and 35,894.92 is: 49,534.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,109.74 : 91,231.44 = 35,894.92 : x
  2. Step 2: Convert to fraction form
    66,109.74/91,231.44 = 35,894.92/x
  3. Step 3: Cross multiply
    66,109.74x = 91,231.44 × 35,894.92
  4. Step 4: Simplify right side
    66,109.74x = 3,274,745,240.28
  5. Step 5: Solve for x
    x = 3,274,745,240.28/66,109.74
  6. Step 6: Final answer
    x = 49,534.99

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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.