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Finding the Fourth Proportional to 57,279.80, 85,846.80 and 51,010.40

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Solution

The fourth proportional to 57,279.80, 85,846.80 and 51,010.40 is: 76,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,279.80 : 85,846.80 = 51,010.40 : x
  2. Step 2: Convert to fraction form
    57,279.80/85,846.80 = 51,010.40/x
  3. Step 3: Cross multiply
    57,279.80x = 85,846.80 × 51,010.40
  4. Step 4: Simplify right side
    57,279.80x = 4,379,079,606.72
  5. Step 5: Solve for x
    x = 4,379,079,606.72/57,279.80
  6. Step 6: Final answer
    x = 76,450.68

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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.