Home / 81,508.36-122,222.22-28,909.96

Finding the Fourth Proportional to 81,508.36, 122,222.22 and 28,909.96

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Solution

The fourth proportional to 81,508.36, 122,222.22 and 28,909.96 is: 43,350.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,508.36 : 122,222.22 = 28,909.96 : x
  2. Step 2: Convert to fraction form
    81,508.36/122,222.22 = 28,909.96/x
  3. Step 3: Cross multiply
    81,508.36x = 122,222.22 × 28,909.96
  4. Step 4: Simplify right side
    81,508.36x = 3,533,439,491.31
  5. Step 5: Solve for x
    x = 3,533,439,491.31/81,508.36
  6. Step 6: Final answer
    x = 43,350.64

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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.