Home / 79,057.61-118,396.39-45,221.05

Finding the Fourth Proportional to 79,057.61, 118,396.39 and 45,221.05

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Solution

The fourth proportional to 79,057.61, 118,396.39 and 45,221.05 is: 67,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,057.61 : 118,396.39 = 45,221.05 : x
  2. Step 2: Convert to fraction form
    79,057.61/118,396.39 = 45,221.05/x
  3. Step 3: Cross multiply
    79,057.61x = 118,396.39 × 45,221.05
  4. Step 4: Simplify right side
    79,057.61x = 5,354,008,662.97
  5. Step 5: Solve for x
    x = 5,354,008,662.97/79,057.61
  6. Step 6: Final answer
    x = 67,722.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.