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Finding the Fourth Proportional to 66,694.88, 92,028.70 and 38,395.08

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Solution

The fourth proportional to 66,694.88, 92,028.70 and 38,395.08 is: 52,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.88 : 92,028.70 = 38,395.08 : x
  2. Step 2: Convert to fraction form
    66,694.88/92,028.70 = 38,395.08/x
  3. Step 3: Cross multiply
    66,694.88x = 92,028.70 × 38,395.08
  4. Step 4: Simplify right side
    66,694.88x = 3,533,449,298.80
  5. Step 5: Solve for x
    x = 3,533,449,298.80/66,694.88
  6. Step 6: Final answer
    x = 52,979.32

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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.