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Finding the Fourth Proportional to 57,672.56, 79,542.06 and 39,763.46

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Solution

The fourth proportional to 57,672.56, 79,542.06 and 39,763.46 is: 54,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,672.56 : 79,542.06 = 39,763.46 : x
  2. Step 2: Convert to fraction form
    57,672.56/79,542.06 = 39,763.46/x
  3. Step 3: Cross multiply
    57,672.56x = 79,542.06 × 39,763.46
  4. Step 4: Simplify right side
    57,672.56x = 3,162,867,521.13
  5. Step 5: Solve for x
    x = 3,162,867,521.13/57,672.56
  6. Step 6: Final answer
    x = 54,841.81

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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.