Home / 81,478.35-122,212.96-22,309.67

Finding the Fourth Proportional to 81,478.35, 122,212.96 and 22,309.67

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Solution

The fourth proportional to 81,478.35, 122,212.96 and 22,309.67 is: 33,463.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,478.35 : 122,212.96 = 22,309.67 : x
  2. Step 2: Convert to fraction form
    81,478.35/122,212.96 = 22,309.67/x
  3. Step 3: Cross multiply
    81,478.35x = 122,212.96 × 22,309.67
  4. Step 4: Simplify right side
    81,478.35x = 2,726,530,807.32
  5. Step 5: Solve for x
    x = 2,726,530,807.32/81,478.35
  6. Step 6: Final answer
    x = 33,463.26

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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.