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Finding the Fourth Proportional to 57,674.12, 79,472.18 and 42,542.80

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Solution

The fourth proportional to 57,674.12, 79,472.18 and 42,542.80 is: 58,621.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,674.12 : 79,472.18 = 42,542.80 : x
  2. Step 2: Convert to fraction form
    57,674.12/79,472.18 = 42,542.80/x
  3. Step 3: Cross multiply
    57,674.12x = 79,472.18 × 42,542.80
  4. Step 4: Simplify right side
    57,674.12x = 3,380,969,059.30
  5. Step 5: Solve for x
    x = 3,380,969,059.30/57,674.12
  6. Step 6: Final answer
    x = 58,621.94

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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.