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Finding the Fourth Proportional to 66,797.76, 92,179.68 and 38,504.64

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Solution

The fourth proportional to 66,797.76, 92,179.68 and 38,504.64 is: 53,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,797.76 : 92,179.68 = 38,504.64 : x
  2. Step 2: Convert to fraction form
    66,797.76/92,179.68 = 38,504.64/x
  3. Step 3: Cross multiply
    66,797.76x = 92,179.68 × 38,504.64
  4. Step 4: Simplify right side
    66,797.76x = 3,549,345,393.72
  5. Step 5: Solve for x
    x = 3,549,345,393.72/66,797.76
  6. Step 6: Final answer
    x = 53,135.69

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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.