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Finding the Third Proportional to 57,030 and 85,545

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Solution

The third proportional to 57,030 and 85,545 is: 128,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,030 : 85,545 = 85,545 : x
  2. Step 2: Convert to fraction form
    57,030/85,545 = 85,545/x
  3. Step 3: Cross multiply
    57,030x = 85,545 × 85,545
  4. Step 4: Simplify right side
    57,030x = 7,317,947,025
  5. Step 5: Solve for x
    x = 7,317,947,025/57,030
  6. Step 6: Final answer
    x = 128,317.50

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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.