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Finding the Fourth Proportional to 57,087.90, 85,708.80 and 33,419.70

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Solution

The fourth proportional to 57,087.90, 85,708.80 and 33,419.70 is: 50,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087.90 : 85,708.80 = 33,419.70 : x
  2. Step 2: Convert to fraction form
    57,087.90/85,708.80 = 33,419.70/x
  3. Step 3: Cross multiply
    57,087.90x = 85,708.80 × 33,419.70
  4. Step 4: Simplify right side
    57,087.90x = 2,864,362,383.36
  5. Step 5: Solve for x
    x = 2,864,362,383.36/57,087.90
  6. Step 6: Final answer
    x = 50,174.60

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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.