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Finding the Third Proportional to 56,426 and 121,360

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Solution

The third proportional to 56,426 and 121,360 is: 261,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,426 : 121,360 = 121,360 : x
  2. Step 2: Convert to fraction form
    56,426/121,360 = 121,360/x
  3. Step 3: Cross multiply
    56,426x = 121,360 × 121,360
  4. Step 4: Simplify right side
    56,426x = 14,728,249,600
  5. Step 5: Solve for x
    x = 14,728,249,600/56,426
  6. Step 6: Final answer
    x = 261,018.85

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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.