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Finding the Third Proportional to 57,508 and 121,928

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Solution

The third proportional to 57,508 and 121,928 is: 258,510.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,508 : 121,928 = 121,928 : x
  2. Step 2: Convert to fraction form
    57,508/121,928 = 121,928/x
  3. Step 3: Cross multiply
    57,508x = 121,928 × 121,928
  4. Step 4: Simplify right side
    57,508x = 14,866,437,184
  5. Step 5: Solve for x
    x = 14,866,437,184/57,508
  6. Step 6: Final answer
    x = 258,510.77

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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.