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Finding the Third Proportional to 57,989.75 and 89,790.75

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Solution

The third proportional to 57,989.75 and 89,790.75 is: 139,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.75 : 89,790.75 = 89,790.75 : x
  2. Step 2: Convert to fraction form
    57,989.75/89,790.75 = 89,790.75/x
  3. Step 3: Cross multiply
    57,989.75x = 89,790.75 × 89,790.75
  4. Step 4: Simplify right side
    57,989.75x = 8,062,378,785.56
  5. Step 5: Solve for x
    x = 8,062,378,785.56/57,989.75
  6. Step 6: Final answer
    x = 139,031.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.