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Finding the Fourth Proportional to 64,620.57, 96,914.65 and 45,845.85

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Solution

The fourth proportional to 64,620.57, 96,914.65 and 45,845.85 is: 68,757.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620.57 : 96,914.65 = 45,845.85 : x
  2. Step 2: Convert to fraction form
    64,620.57/96,914.65 = 45,845.85/x
  3. Step 3: Cross multiply
    64,620.57x = 96,914.65 × 45,845.85
  4. Step 4: Simplify right side
    64,620.57x = 4,443,134,506.70
  5. Step 5: Solve for x
    x = 4,443,134,506.70/64,620.57
  6. Step 6: Final answer
    x = 68,757.28

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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.