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Finding the Fourth Proportional to 67,135.80, 92,660.80 and 51,191.76

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Solution

The fourth proportional to 67,135.80, 92,660.80 and 51,191.76 is: 70,654.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,135.80 : 92,660.80 = 51,191.76 : x
  2. Step 2: Convert to fraction form
    67,135.80/92,660.80 = 51,191.76/x
  3. Step 3: Cross multiply
    67,135.80x = 92,660.80 × 51,191.76
  4. Step 4: Simplify right side
    67,135.80x = 4,743,469,435.01
  5. Step 5: Solve for x
    x = 4,743,469,435.01/67,135.80
  6. Step 6: Final answer
    x = 70,654.84

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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.