Home / 79,721.84-109,895.86-65,550.08

Finding the Fourth Proportional to 79,721.84, 109,895.86 and 65,550.08

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Solution

The fourth proportional to 79,721.84, 109,895.86 and 65,550.08 is: 90,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,721.84 : 109,895.86 = 65,550.08 : x
  2. Step 2: Convert to fraction form
    79,721.84/109,895.86 = 65,550.08/x
  3. Step 3: Cross multiply
    79,721.84x = 109,895.86 × 65,550.08
  4. Step 4: Simplify right side
    79,721.84x = 7,203,682,414.67
  5. Step 5: Solve for x
    x = 7,203,682,414.67/79,721.84
  6. Step 6: Final answer
    x = 90,360.21

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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.