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Finding the Third Proportional to 47,386 and 78,964

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Solution

The third proportional to 47,386 and 78,964 is: 131,585.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,386 : 78,964 = 78,964 : x
  2. Step 2: Convert to fraction form
    47,386/78,964 = 78,964/x
  3. Step 3: Cross multiply
    47,386x = 78,964 × 78,964
  4. Step 4: Simplify right side
    47,386x = 6,235,313,296
  5. Step 5: Solve for x
    x = 6,235,313,296/47,386
  6. Step 6: Final answer
    x = 131,585.56

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.