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Finding the Fourth Proportional to 84,485, 126,722.58 and 22,155.48

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Solution

The fourth proportional to 84,485, 126,722.58 and 22,155.48 is: 33,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,485 : 126,722.58 = 22,155.48 : x
  2. Step 2: Convert to fraction form
    84,485/126,722.58 = 22,155.48/x
  3. Step 3: Cross multiply
    84,485x = 126,722.58 × 22,155.48
  4. Step 4: Simplify right side
    84,485x = 2,807,599,586.74
  5. Step 5: Solve for x
    x = 2,807,599,586.74/84,485
  6. Step 6: Final answer
    x = 33,231.93

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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.