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Finding the Fourth Proportional to 79,245.90, 109,349.61 and 50,162.90

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Solution

The fourth proportional to 79,245.90, 109,349.61 and 50,162.90 is: 69,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245.90 : 109,349.61 = 50,162.90 : x
  2. Step 2: Convert to fraction form
    79,245.90/109,349.61 = 50,162.90/x
  3. Step 3: Cross multiply
    79,245.90x = 109,349.61 × 50,162.90
  4. Step 4: Simplify right side
    79,245.90x = 5,485,293,551.47
  5. Step 5: Solve for x
    x = 5,485,293,551.47/79,245.90
  6. Step 6: Final answer
    x = 69,218.64

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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.