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Finding the Third Proportional to 56,679.75 and 86,143.50

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Solution

The third proportional to 56,679.75 and 86,143.50 is: 130,923.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,679.75 : 86,143.50 = 86,143.50 : x
  2. Step 2: Convert to fraction form
    56,679.75/86,143.50 = 86,143.50/x
  3. Step 3: Cross multiply
    56,679.75x = 86,143.50 × 86,143.50
  4. Step 4: Simplify right side
    56,679.75x = 7,420,702,592.25
  5. Step 5: Solve for x
    x = 7,420,702,592.25/56,679.75
  6. Step 6: Final answer
    x = 130,923.35

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.