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Finding the Third Proportional to 39,456 and 79,776

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Solution

The third proportional to 39,456 and 79,776 is: 161,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,456 : 79,776 = 79,776 : x
  2. Step 2: Convert to fraction form
    39,456/79,776 = 79,776/x
  3. Step 3: Cross multiply
    39,456x = 79,776 × 79,776
  4. Step 4: Simplify right side
    39,456x = 6,364,210,176
  5. Step 5: Solve for x
    x = 6,364,210,176/39,456
  6. Step 6: Final answer
    x = 161,298.92

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.