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Finding the Third Proportional to 57,429 and 121,803.75

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Solution

The third proportional to 57,429 and 121,803.75 is: 258,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,429 : 121,803.75 = 121,803.75 : x
  2. Step 2: Convert to fraction form
    57,429/121,803.75 = 121,803.75/x
  3. Step 3: Cross multiply
    57,429x = 121,803.75 × 121,803.75
  4. Step 4: Simplify right side
    57,429x = 14,836,153,514.06
  5. Step 5: Solve for x
    x = 14,836,153,514.06/57,429
  6. Step 6: Final answer
    x = 258,339.05

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.