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Finding the Fourth Proportional to 54,809.70, 82,214.55 and 51,747.90

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Solution

The fourth proportional to 54,809.70, 82,214.55 and 51,747.90 is: 77,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,809.70 : 82,214.55 = 51,747.90 : x
  2. Step 2: Convert to fraction form
    54,809.70/82,214.55 = 51,747.90/x
  3. Step 3: Cross multiply
    54,809.70x = 82,214.55 × 51,747.90
  4. Step 4: Simplify right side
    54,809.70x = 4,254,430,311.95
  5. Step 5: Solve for x
    x = 4,254,430,311.95/54,809.70
  6. Step 6: Final answer
    x = 77,621.85

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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.