Home / 79,320.48-109,418.09-49,086.56

Finding the Fourth Proportional to 79,320.48, 109,418.09 and 49,086.56

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Solution

The fourth proportional to 79,320.48, 109,418.09 and 49,086.56 is: 67,712.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,320.48 : 109,418.09 = 49,086.56 : x
  2. Step 2: Convert to fraction form
    79,320.48/109,418.09 = 49,086.56/x
  3. Step 3: Cross multiply
    79,320.48x = 109,418.09 × 49,086.56
  4. Step 4: Simplify right side
    79,320.48x = 5,370,956,847.35
  5. Step 5: Solve for x
    x = 5,370,956,847.35/79,320.48
  6. Step 6: Final answer
    x = 67,712.11

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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.