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Finding the Fourth Proportional to 79,965.36, 110,355.48 and 49,768.56

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Solution

The fourth proportional to 79,965.36, 110,355.48 and 49,768.56 is: 68,682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,965.36 : 110,355.48 = 49,768.56 : x
  2. Step 2: Convert to fraction form
    79,965.36/110,355.48 = 49,768.56/x
  3. Step 3: Cross multiply
    79,965.36x = 110,355.48 × 49,768.56
  4. Step 4: Simplify right side
    79,965.36x = 5,492,233,327.71
  5. Step 5: Solve for x
    x = 5,492,233,327.71/79,965.36
  6. Step 6: Final answer
    x = 68,682.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.