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Finding the Fourth Proportional to 57,309.65, 85,800.45 and 50,748.65

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Solution

The fourth proportional to 57,309.65, 85,800.45 and 50,748.65 is: 75,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,309.65 : 85,800.45 = 50,748.65 : x
  2. Step 2: Convert to fraction form
    57,309.65/85,800.45 = 50,748.65/x
  3. Step 3: Cross multiply
    57,309.65x = 85,800.45 × 50,748.65
  4. Step 4: Simplify right side
    57,309.65x = 4,354,257,006.89
  5. Step 5: Solve for x
    x = 4,354,257,006.89/57,309.65
  6. Step 6: Final answer
    x = 75,977.73

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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.