Home / 81,336.80-122,001.60-22,172.47

Finding the Fourth Proportional to 81,336.80, 122,001.60 and 22,172.47

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Solution

The fourth proportional to 81,336.80, 122,001.60 and 22,172.47 is: 33,257.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336.80 : 122,001.60 = 22,172.47 : x
  2. Step 2: Convert to fraction form
    81,336.80/122,001.60 = 22,172.47/x
  3. Step 3: Cross multiply
    81,336.80x = 122,001.60 × 22,172.47
  4. Step 4: Simplify right side
    81,336.80x = 2,705,076,815.95
  5. Step 5: Solve for x
    x = 2,705,076,815.95/81,336.80
  6. Step 6: Final answer
    x = 33,257.72

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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.