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Finding the Fourth Proportional to 66,119.52, 91,245.68 and 35,905.20

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Solution

The fourth proportional to 66,119.52, 91,245.68 and 35,905.20 is: 49,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,119.52 : 91,245.68 = 35,905.20 : x
  2. Step 2: Convert to fraction form
    66,119.52/91,245.68 = 35,905.20/x
  3. Step 3: Cross multiply
    66,119.52x = 91,245.68 × 35,905.20
  4. Step 4: Simplify right side
    66,119.52x = 3,276,194,389.54
  5. Step 5: Solve for x
    x = 3,276,194,389.54/66,119.52
  6. Step 6: Final answer
    x = 49,549.58

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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.