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Finding the Fourth Proportional to 57,309.70, 85,976.70 and 17,325.40

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Solution

The fourth proportional to 57,309.70, 85,976.70 and 17,325.40 is: 25,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,309.70 : 85,976.70 = 17,325.40 : x
  2. Step 2: Convert to fraction form
    57,309.70/85,976.70 = 17,325.40/x
  3. Step 3: Cross multiply
    57,309.70x = 85,976.70 × 17,325.40
  4. Step 4: Simplify right side
    57,309.70x = 1,489,580,718.18
  5. Step 5: Solve for x
    x = 1,489,580,718.18/57,309.70
  6. Step 6: Final answer
    x = 25,991.77

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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.