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Finding the Third Proportional to 56,518.50 and 121,785

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Solution

The third proportional to 56,518.50 and 121,785 is: 262,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,518.50 : 121,785 = 121,785 : x
  2. Step 2: Convert to fraction form
    56,518.50/121,785 = 121,785/x
  3. Step 3: Cross multiply
    56,518.50x = 121,785 × 121,785
  4. Step 4: Simplify right side
    56,518.50x = 14,831,586,225
  5. Step 5: Solve for x
    x = 14,831,586,225/56,518.50
  6. Step 6: Final answer
    x = 262,420.03

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.