Home / 81,495.10-122,378.46-55,011.88

Finding the Fourth Proportional to 81,495.10, 122,378.46 and 55,011.88

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Solution

The fourth proportional to 81,495.10, 122,378.46 and 55,011.88 is: 82,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,495.10 : 122,378.46 = 55,011.88 : x
  2. Step 2: Convert to fraction form
    81,495.10/122,378.46 = 55,011.88/x
  3. Step 3: Cross multiply
    81,495.10x = 122,378.46 × 55,011.88
  4. Step 4: Simplify right side
    81,495.10x = 6,732,269,156.10
  5. Step 5: Solve for x
    x = 6,732,269,156.10/81,495.10
  6. Step 6: Final answer
    x = 82,609.50

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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.