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Finding the Fourth Proportional to 66,754.64, 92,144.40 and 38,471.60

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Solution

The fourth proportional to 66,754.64, 92,144.40 and 38,471.60 is: 53,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,754.64 : 92,144.40 = 38,471.60 : x
  2. Step 2: Convert to fraction form
    66,754.64/92,144.40 = 38,471.60/x
  3. Step 3: Cross multiply
    66,754.64x = 92,144.40 × 38,471.60
  4. Step 4: Simplify right side
    66,754.64x = 3,544,942,499.04
  5. Step 5: Solve for x
    x = 3,544,942,499.04/66,754.64
  6. Step 6: Final answer
    x = 53,104.06

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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.