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Finding the Third Proportional to 57,152.75 and 85,726

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Solution

The third proportional to 57,152.75 and 85,726 is: 128,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,152.75 : 85,726 = 85,726 : x
  2. Step 2: Convert to fraction form
    57,152.75/85,726 = 85,726/x
  3. Step 3: Cross multiply
    57,152.75x = 85,726 × 85,726
  4. Step 4: Simplify right side
    57,152.75x = 7,348,947,076
  5. Step 5: Solve for x
    x = 7,348,947,076/57,152.75
  6. Step 6: Final answer
    x = 128,584.31

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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.