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Finding the Fourth Proportional to 57,331.80, 85,997.70 and 54,739.80

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Solution

The fourth proportional to 57,331.80, 85,997.70 and 54,739.80 is: 82,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,331.80 : 85,997.70 = 54,739.80 : x
  2. Step 2: Convert to fraction form
    57,331.80/85,997.70 = 54,739.80/x
  3. Step 3: Cross multiply
    57,331.80x = 85,997.70 × 54,739.80
  4. Step 4: Simplify right side
    57,331.80x = 4,707,496,898.46
  5. Step 5: Solve for x
    x = 4,707,496,898.46/57,331.80
  6. Step 6: Final answer
    x = 82,109.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.