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Finding the Fourth Proportional to 79,226.40, 118,839.60 and 51,232.80

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Solution

The fourth proportional to 79,226.40, 118,839.60 and 51,232.80 is: 76,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,226.40 : 118,839.60 = 51,232.80 : x
  2. Step 2: Convert to fraction form
    79,226.40/118,839.60 = 51,232.80/x
  3. Step 3: Cross multiply
    79,226.40x = 118,839.60 × 51,232.80
  4. Step 4: Simplify right side
    79,226.40x = 6,088,485,458.88
  5. Step 5: Solve for x
    x = 6,088,485,458.88/79,226.40
  6. Step 6: Final answer
    x = 76,849.20

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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.