Home / 79,640.55-109,899.99-43,829.64

Finding the Fourth Proportional to 79,640.55, 109,899.99 and 43,829.64

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Solution

The fourth proportional to 79,640.55, 109,899.99 and 43,829.64 is: 60,482.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,640.55 : 109,899.99 = 43,829.64 : x
  2. Step 2: Convert to fraction form
    79,640.55/109,899.99 = 43,829.64/x
  3. Step 3: Cross multiply
    79,640.55x = 109,899.99 × 43,829.64
  4. Step 4: Simplify right side
    79,640.55x = 4,816,876,997.70
  5. Step 5: Solve for x
    x = 4,816,876,997.70/79,640.55
  6. Step 6: Final answer
    x = 60,482.72

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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.