Home / 79,198.96-109,278.18-45,218.50

Finding the Fourth Proportional to 79,198.96, 109,278.18 and 45,218.50

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Solution

The fourth proportional to 79,198.96, 109,278.18 and 45,218.50 is: 62,392.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.96 : 109,278.18 = 45,218.50 : x
  2. Step 2: Convert to fraction form
    79,198.96/109,278.18 = 45,218.50/x
  3. Step 3: Cross multiply
    79,198.96x = 109,278.18 × 45,218.50
  4. Step 4: Simplify right side
    79,198.96x = 4,941,395,819.21
  5. Step 5: Solve for x
    x = 4,941,395,819.21/79,198.96
  6. Step 6: Final answer
    x = 62,392.18

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1.5x scale

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.