Home / 79,712.20-109,994.70-49,080.43

Finding the Fourth Proportional to 79,712.20, 109,994.70 and 49,080.43

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Solution

The fourth proportional to 79,712.20, 109,994.70 and 49,080.43 is: 67,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,712.20 : 109,994.70 = 49,080.43 : x
  2. Step 2: Convert to fraction form
    79,712.20/109,994.70 = 49,080.43/x
  3. Step 3: Cross multiply
    79,712.20x = 109,994.70 × 49,080.43
  4. Step 4: Simplify right side
    79,712.20x = 5,398,587,173.72
  5. Step 5: Solve for x
    x = 5,398,587,173.72/79,712.20
  6. Step 6: Final answer
    x = 67,725.98

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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.