Home / 79,631.04-109,845.12-49,771.20

Finding the Fourth Proportional to 79,631.04, 109,845.12 and 49,771.20

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Solution

The fourth proportional to 79,631.04, 109,845.12 and 49,771.20 is: 68,655.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,631.04 : 109,845.12 = 49,771.20 : x
  2. Step 2: Convert to fraction form
    79,631.04/109,845.12 = 49,771.20/x
  3. Step 3: Cross multiply
    79,631.04x = 109,845.12 × 49,771.20
  4. Step 4: Simplify right side
    79,631.04x = 5,467,123,436.54
  5. Step 5: Solve for x
    x = 5,467,123,436.54/79,631.04
  6. Step 6: Final answer
    x = 68,655.68

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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.