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Finding the Third Proportional to 31,216 and 40,429.75

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Solution

The third proportional to 31,216 and 40,429.75 is: 52,363.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,216 : 40,429.75 = 40,429.75 : x
  2. Step 2: Convert to fraction form
    31,216/40,429.75 = 40,429.75/x
  3. Step 3: Cross multiply
    31,216x = 40,429.75 × 40,429.75
  4. Step 4: Simplify right side
    31,216x = 1,634,564,685.06
  5. Step 5: Solve for x
    x = 1,634,564,685.06/31,216
  6. Step 6: Final answer
    x = 52,363.04

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.