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Finding the Third Proportional to 56,740.50 and 85,355

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Solution

The third proportional to 56,740.50 and 85,355 is: 128,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,740.50 : 85,355 = 85,355 : x
  2. Step 2: Convert to fraction form
    56,740.50/85,355 = 85,355/x
  3. Step 3: Cross multiply
    56,740.50x = 85,355 × 85,355
  4. Step 4: Simplify right side
    56,740.50x = 7,285,476,025
  5. Step 5: Solve for x
    x = 7,285,476,025/56,740.50
  6. Step 6: Final answer
    x = 128,399.93

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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.