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Finding the Fourth Proportional to 81,368.90, 122,072.84 and 33,957.62

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Solution

The fourth proportional to 81,368.90, 122,072.84 and 33,957.62 is: 50,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.90 : 122,072.84 = 33,957.62 : x
  2. Step 2: Convert to fraction form
    81,368.90/122,072.84 = 33,957.62/x
  3. Step 3: Cross multiply
    81,368.90x = 122,072.84 × 33,957.62
  4. Step 4: Simplify right side
    81,368.90x = 4,145,303,113.04
  5. Step 5: Solve for x
    x = 4,145,303,113.04/81,368.90
  6. Step 6: Final answer
    x = 50,944.56

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1.5x scale

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.