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Finding the Fourth Proportional to 66,168.72, 91,311.96 and 35,953.74

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Solution

The fourth proportional to 66,168.72, 91,311.96 and 35,953.74 is: 49,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.72 : 91,311.96 = 35,953.74 : x
  2. Step 2: Convert to fraction form
    66,168.72/91,311.96 = 35,953.74/x
  3. Step 3: Cross multiply
    66,168.72x = 91,311.96 × 35,953.74
  4. Step 4: Simplify right side
    66,168.72x = 3,283,006,468.73
  5. Step 5: Solve for x
    x = 3,283,006,468.73/66,168.72
  6. Step 6: Final answer
    x = 49,615.69

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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.