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Finding the Fourth Proportional to 57,379.92, 85,493.16 and 54,156.96

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Solution

The fourth proportional to 57,379.92, 85,493.16 and 54,156.96 is: 80,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,379.92 : 85,493.16 = 54,156.96 : x
  2. Step 2: Convert to fraction form
    57,379.92/85,493.16 = 54,156.96/x
  3. Step 3: Cross multiply
    57,379.92x = 85,493.16 × 54,156.96
  4. Step 4: Simplify right side
    57,379.92x = 4,630,049,646.39
  5. Step 5: Solve for x
    x = 4,630,049,646.39/57,379.92
  6. Step 6: Final answer
    x = 80,691.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.