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Finding the Fourth Proportional to 79,674.60, 119,511.90 and 54,791.40

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Solution

The fourth proportional to 79,674.60, 119,511.90 and 54,791.40 is: 82,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,674.60 : 119,511.90 = 54,791.40 : x
  2. Step 2: Convert to fraction form
    79,674.60/119,511.90 = 54,791.40/x
  3. Step 3: Cross multiply
    79,674.60x = 119,511.90 × 54,791.40
  4. Step 4: Simplify right side
    79,674.60x = 6,548,224,317.66
  5. Step 5: Solve for x
    x = 6,548,224,317.66/79,674.60
  6. Step 6: Final answer
    x = 82,187.10

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1.5x scale

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.